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The current ratio of boys to girls at a certain school is 2 to 5. If 1
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31 Dec 2021, 07:17
31 Dec 2021, 07:17
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11% (01:36) wrong based on 9 sessions
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The current ratio of boys to girls at a certain school is 2 to 5. If 12 additional boys were added to the school, the new ratio of boys to girls would be 4 to 9. How many boys currently attend the school?
(A) 27
(B) 48
(C) 54
(D) 72
(E) 108
(A) 27
(B) 48
(C) 54
(D) 72
(E) 108
Re: The current ratio of boys to girls at a certain school is 2 to 5. If 1
[#permalink]
31 Dec 2021, 12:54
31 Dec 2021, 12:54
From the given information, two expressions could be created:
2G=5B, and
9(B+12) = 4G
Combining the two equations give the following
9B+108=10B,
which then makes the number of boys to be 108.
2G=5B, and
9(B+12) = 4G
Combining the two equations give the following
9B+108=10B,
which then makes the number of boys to be 108.
gmatclubot
Re: The current ratio of boys to girls at a certain school is 2 to 5. If 1 [#permalink]
31 Dec 2021, 12:54
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