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Posted: 1/3/2012 3:15:02 PM EDT
So my wife and I are trying to help my son who is struggling a touch when we come across this problem. We know the answer as it is multiple choice, but how the hell do we get that answer? Please show your work.
 30. Jimmy's Pet Shop has a ratio of 4 dogs to 7 cats. If there are 44 total animals in the shop, how many are cats? Help me ARFCOM, you're my only hope. Plus, my wife laughed and acted like the Hive couldn't figure this one out.
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Posted: 1/3/2012 3:17:34 PM EDT
[#1]
Quoted:
So my wife and I are trying to help my son who is struggling a touch when we come across this problem. We know the answer as it is multiple choice, but how the hell do we get that answer? Please show your work. 30. Jimmy's Pet Shop has a ratio of 4 dogs to 7 cats. If there are 44 total animals in the shop, how many are cats? Help me ARFCOM, you're my only hope. Plus, my wife laughed and acted like the Hive couldn't figure this one out. I'd use algebra, but this is only 6th grade math. So... Out of 11 animals, four are dogs and 7 are cats. There are 44 animals, thus four groups of ll. 4 x 4 =16 4 x 7 = 28 |
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Posted: 1/3/2012 3:19:02 PM EDT
[#2]
Quoted: Quoted: So my wife and I are trying to help my son who is struggling a touch when we come across this problem. We know the answer as it is multiple choice, but how the hell do we get that answer? Please show your work. 30. Jimmy's Pet Shop has a ratio of 4 dogs to 7 cats. If there are 44 total animals in the shop, how many are cats? Help me ARFCOM, you're my only hope. Plus, my wife laughed and acted like the Hive couldn't figure this one out. I'd use algebra, but this is only 6th grade math. So... Out of 11 animals, four are dogs and 7 are cats. There are 44 animals, thus four groups of ll. 4 x 4 =16 4 x 7 = 28 Mind showing the algebra on this as well? |
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Posted: 1/3/2012 3:20:37 PM EDT
[#3]
It's fractions, man ...
4/11 * 44 = Dogs 7/11 * 44 = Cats |
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Posted: 1/3/2012 3:21:07 PM EDT
[#4]
44=x(4+7) ?
Then solve for X? |
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Posted: 1/3/2012 3:22:15 PM EDT
[#5]
Quoted: It's fractions, man ... 4/11 * 44 = Dogs 7/11 * 44 = Cats Almost got you before the edit. |
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Posted: 1/3/2012 3:24:12 PM EDT
[#6]
4 dogs, 7 cats
dogs = 4:11 ratio cats = 7:11 ratio Total # of animals/ratio total * ratio number 44/11 * 4 gives you the dogs 44/11 * 7 gives you the cats |
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Posted: 1/3/2012 3:25:20 PM EDT
[#7]
4 dogs 7 cats = 11
4 dogs 7 cats = 22 4 dogs 7 cats = 33 4 dogs 7 cats = 44 28 cats :) |
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Posted: 1/3/2012 3:25:39 PM EDT
[#8]
Go to Khan Academy
He no doubt has a video that talks about fractions and word problems. Khan Academy |
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Posted: 1/3/2012 3:27:15 PM EDT
[#9]
Quoted: 44=x(4+7) ? Then solve for X? Exactly the method we needed. Thanks all! Trying to figure this crap out when they don't have a book is just tough. |
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Posted: 1/3/2012 3:28:58 PM EDT
[#10]
Quoted:
Quoted:
Quoted:
So my wife and I are trying to help my son who is struggling a touch when we come across this problem. We know the answer as it is multiple choice, but how the hell do we get that answer? Please show your work. 30. Jimmy's Pet Shop has a ratio of 4 dogs to 7 cats. If there are 44 total animals in the shop, how many are cats? Help me ARFCOM, you're my only hope. Plus, my wife laughed and acted like the Hive couldn't figure this one out. I'd use algebra, but this is only 6th grade math. So... Out of 11 animals, four are dogs and 7 are cats. There are 44 animals, thus four groups of ll. 4 x 4 =16 4 x 7 = 28 Mind showing the algebra on this as well? x = number of dogs 7/4 * x = number of cats 44 = x + 7/4 * x 44 =11/4 * x 16 =x = number of dogs 7/4 * 16 = 28 = number of cats And I noticed that just using the ratios, as another poster did, would have been much faster. Force of habit 
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Posted: 1/3/2012 3:30:17 PM EDT
[#11]
Quoted:
Quoted:
44=x(4+7) ? Then solve for X? Exactly the method we needed. Thanks all! Trying to figure this crap out when they don't have a book is just tough. KiloBravo's answer is probably what the teacher is looking for. |
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Posted: 1/3/2012 3:31:02 PM EDT
[#12]
Being a pet shop it is safe to assume that they would only have healthy animals. That is to say that there would be no animals missing legs. (Assumptions and calculated guesses are a key part of mathematics)
So 44 animals with 4 legs each 44x4= 176 legs now we know the ratio of 4 dogs to 7 cats and math tells us that 4+3=7 so we can say this as 7=3/4 we know there are more cats than dogs so we want to take the 7 and multiply it by the larger number (more cats=larger number) So now we have 7x4=28 so we have 28 cats So logic states that if there are 28 cats then the rest must be dogs so we separate the cats from the dogs by further mathematics 44 total animals - 28 cats = 16 dogs. Basic stuff really.... |
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Posted: 1/3/2012 3:33:01 PM EDT
[#13]
If arfcom ruled the world, we be to mars by now.
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Posted: 1/3/2012 3:33:43 PM EDT
[#14]
X(4 + 7) = 44
11X = 44 X = 4 Therefore there are 16 Dogs and 28 Cats |
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Posted: 1/3/2012 3:35:48 PM EDT
[#15]
Quoted:
44=x(4+7) ? Then solve for X? +1. 
Impeach Obama for the Good of the College Students.  
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Posted: 1/3/2012 3:36:01 PM EDT
[#16]
Quoted: If arfcom ruled the world, we be to mars by now. Is that near Uranus......  |
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Posted: 1/3/2012 3:39:08 PM EDT
[#17]
All I know is it isn't a damn opossum.
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Posted: 1/3/2012 3:41:42 PM EDT
[#18]
Why doesn't he have a book?
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Posted: 1/3/2012 3:42:18 PM EDT
[#19]
Quoted:
If arfcom ruled the world, we be to mars by now. That's laughable. While you can ask damn near anything here and almost certainly get a correct answer, that answer will generally be drowned out by a tide of bullshit. |
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Posted: 1/3/2012 3:47:35 PM EDT
[#20]
Quoted:
Quoted:
If arfcom ruled the world, we be to mars by now. Is that near Uranus......
Near the rim.... Posted Via AR15.Com Mobile |
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Posted: 1/3/2012 3:55:12 PM EDT
[#21]
Check out this link:
http://www.khanacademy.org/search?page_search_query=ratios They have a lot of great video lessons on a variety of subjects... |
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Posted: 1/3/2012 3:56:17 PM EDT
[#22]
Quoted: Quoted: If arfcom ruled the world, we be to mars by now. That's laughable. While you can ask damn near anything here and almost certainly get a correct answer, that answer will generally be drowned out by a tide of bullshit. HEY.... bullshit is all some of us have to offer |
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Posted: 1/3/2012 3:58:33 PM EDT
[#23]
Now express your answer in the form of a question.
What round for 28 cats? |
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Posted: 1/3/2012 3:59:12 PM EDT
[#24]
"how does this work daddy?"
"uuuuuuuuh... you gotta cheat son, that's what I did" -Joe Rogan |
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Posted: 1/3/2012 4:01:36 PM EDT
[#25]
Quoted: Now express your answer in the form of a question. What round for 28 cats? Brock Lesner? |
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Posted: 1/3/2012 4:05:47 PM EDT
[#26]
I question is BS unless the shop only sells dogs and cats.
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Posted: 1/3/2012 4:08:24 PM EDT
[#27]
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Posted: 1/3/2012 4:14:02 PM EDT
[#28]
Quoted:
I question is BS unless the shop only sells dogs and cats. That is a perfectly valid and insightful point which outlines one of the major problems with the way word problems are designed. I've never seen a single pet store that ONLY sells cats and dogs. |
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Posted: 1/3/2012 4:36:25 PM EDT
[#29]
Quoted: Quoted: I question is BS unless the shop only sells dogs and cats. That is a perfectly valid and insightful point which outlines one of the major problems with the way word problems are designed. I've never seen a single pet store that ONLY sells cats and dogs. Actually it is invalid. It was never stated that they ONLY sold cats and dogs. The problem is just referring to the ratio of cats and dogs at the store. |
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Posted: 1/4/2012 8:25:32 AM EDT
[#30]
Quoted:
Quoted:
Quoted:
I question is BS unless the shop only sells dogs and cats. That is a perfectly valid and insightful point which outlines one of the major problems with the way word problems are designed. I've never seen a single pet store that ONLY sells cats and dogs. Actually it is invalid. It was never stated that they ONLY sold cats and dogs. The problem is just referring to the ratio of cats and dogs at the store. Exactly. The problem never states that, but it does state that there are 44 total animals in the store. One must know the total number of dogs and cats in order to use the ratios to find the number of cats. That is never explicitly stated. In order to arrive at the "correct" answer, the student has to assume something which is not explicitly stated in the question and runs completely counter to real-life experiences. Problems like this teach students to "game" the question, not to apply critical thinking skills and math to a physical problem, which is the point of word problems in the first place. |
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Posted: 1/4/2012 2:24:25 PM EDT
[#31]
Quoted:
Quoted:
If arfcom ruled the world, we be to mars by now. That's laughable. While you can ask damn near anything here and almost certainly get a correct answer, that answer will generally be drowned out by a tide of bullshit. Just reference the "plane on a treadmill" and ".9bar = 1 threads 
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Posted: 1/4/2012 3:31:24 PM EDT
[#32]
Quoted:
30. Jimmy's Pet Shop has a ratio of 4 dogs to 7 cats. If there are 44 total animals in the shop, how many are cats? [div]
d/c = 4/7 d+c = 44 d = 4/7*c 4/7*c + c = 44 11/7*c = 44 c = 44/11*7 C = 28. |
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