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The ratio of toddlers to infants at a day care center is 7 to 3. If
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19 Oct 2016, 22:33

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E

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Question Stats:

89% (01:29) correct 11% (02:25) wrong based on 170 sessions

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The ratio of toddlers to infants at a day care center is 7 to 3. If twelve more infants join the day care to change the ratio to 7 to 5, how many toddlers are there at this day care center?

Re: The ratio of toddlers to infants at a day care center is 7 to 3. If
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20 Oct 2016, 07:06

Bunuel wrote:

The ratio of toddlers to infants at a day care center is 7 to 3. If twelve more infants join the day care to change the ratio to 7 to 5, how many toddlers are there at this day care center?

A. 24 B. 36 C. 42 D. 72 E. 120

5x - 3x = 12

So, 2x = 6

hence no of toddlers is 6*7 =42 Answer will be (C) 42 _________________

Thanks and Regards

Abhishek....

PLEASE FOLLOW THE RULES FOR POSTING IN QA AND VA FORUM AND USE SEARCH FUNCTION BEFORE POSTING NEW QUESTIONS

Re: The ratio of toddlers to infants at a day care center is 7 to 3. If
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20 Oct 2016, 07:52

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Bunuel wrote:

The ratio of toddlers to infants at a day care center is 7 to 3. If twelve more infants join the day care to change the ratio to 7 to 5, how many toddlers are there at this day care center?

A. 24 B. 36 C. 42 D. 72 E. 120

Here's a different solution. If the original toddlers to infant ratio is 7 to 3, then there are many different possible scenarios. Here are a few possibilities: - 7 toddlers and 3 infants - 14 toddlers and 6 infants - 21 toddlers and 9 infants - 28 toddlers and 12 infants . . . IMPORTANT: Notice that the number of toddlers is always divisible by 7 So, the correct answer must be divisible by 7

When we check the answer choices, we see that we can ELIMINATE A, B, D and E

Re: The ratio of toddlers to infants at a day care center is 7 to 3. If
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20 Oct 2016, 16:38

The ratio of toddlers to infants at a day care center is 7 to 3. If twelve more infants join the day care to change the ratio to 7 to 5, how many toddlers are there at this day care center?

Re: The ratio of toddlers to infants at a day care center is 7 to 3. If
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22 Apr 2018, 16:40

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