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# The ratio of boys to girls in a hospital maternity ward is 3 : 4. Whic

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Math Expert
Joined: 02 Sep 2009
Posts: 59587
The ratio of boys to girls in a hospital maternity ward is 3 : 4. Whic  [#permalink]

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19 Feb 2019, 23:43
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Difficulty:

15% (low)

Question Stats:

87% (00:28) correct 13% (01:08) wrong based on 31 sessions

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The ratio of boys to girls in a hospital maternity ward is 3 : 4. Which of the following CANNOT be the number of babies in the ward?

A. 28
B. 35
C. 38
D. 42
E. 63

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Joined: 11 Dec 2013
Posts: 120
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GMAT Date: 03-15-2015
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Re: The ratio of boys to girls in a hospital maternity ward is 3 : 4. Whic  [#permalink]

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19 Feb 2019, 23:51
Boys = 3k
Girls = 4k
Total = 7k
the number of babies in the ward must be a multiple of 7 (3:4)
Hence C
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Re: The ratio of boys to girls in a hospital maternity ward is 3 : 4. Whic  [#permalink]

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19 Feb 2019, 23:55
1
Answer must be C.

The sum of ratio should divide the number to calculate the values

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Re: The ratio of boys to girls in a hospital maternity ward is 3 : 4. Whic  [#permalink]

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20 Feb 2019, 02:09
Bunuel wrote:
The ratio of boys to girls in a hospital maternity ward is 3 : 4. Which of the following CANNOT be the number of babies in the ward?

A. 28
B. 35
C. 38
D. 42
E. 63

total 3:4 = 7
is not divisible by 38
IMO C
Re: The ratio of boys to girls in a hospital maternity ward is 3 : 4. Whic   [#permalink] 20 Feb 2019, 02:09
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# The ratio of boys to girls in a hospital maternity ward is 3 : 4. Whic

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