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Yesterday, at a certain school, the ratio of boys to girls was 1 to 3.
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30 Mar 2026, 12:08
30 Mar 2026, 12:08
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Question Stats:
44% (01:48) correct
56% (01:13) wrong based on 25 sessions
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Yesterday, at a certain school, the ratio of boys to girls was 1 to 3. Today, an equal number of boys and girls joined the school. The number that joined was greater than zero and no students left.
The quantity in Column A is greater
The quantity in Column B is greater
The two quantities are equal
The relationship cannot be determined from the information given
Quantity A |
Quantity B |
\(\text { Ratio of boys to girls now }\) |
\(\frac{1}{3}\) |
The quantity in Column A is greater
The quantity in Column B is greater
The two quantities are equal
The relationship cannot be determined from the information given
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Joined: 20 Feb 2017
Posts: 2936
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Re: Yesterday, at a certain school, the ratio of boys to girls was 1 to 3.
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06 Apr 2026, 04:29
06 Apr 2026, 04:29
1
Expert Reply
Easiest way to solve:
Start with the ratio 1:3 (boys:girls). That means there are more girls than boys.
Now add the same number of boys and girls.
This helps the smaller group (boys) more because adding equal amounts reduces the gap between them
For example:
Boys = 1
Girls = 3
Add 1 to both:
Boys = 2
Girls = 4
New ratio = 2/4=1/2
Compare:
Old ratio = 1/3
New ratio = 1/2
Clearly:
1/2 > 1/3
Answer: A
Start with the ratio 1:3 (boys:girls). That means there are more girls than boys.
Now add the same number of boys and girls.
This helps the smaller group (boys) more because adding equal amounts reduces the gap between them
For example:
Boys = 1
Girls = 3
Add 1 to both:
Boys = 2
Girls = 4
New ratio = 2/4=1/2
Compare:
Old ratio = 1/3
New ratio = 1/2
Clearly:
1/2 > 1/3
Answer: A
gmatclubot
Re: Yesterday, at a certain school, the ratio of boys to girls was 1 to 3. [#permalink]
06 Apr 2026, 04:29
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