A class in a certain school consists of boys and girls in the ratio of 2:1. In a mathematics test, 60% of the class pass

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by Gmat_mission » Sun Jan 31, 2021 3:21 pm

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A class in a certain school consists of boys and girls in the ratio of 2:1. In a mathematics test, 60% of the class passed the test. If 40% of the boys failed the test, what percentage of the class are girls who passed the test?

A. 10%
B. 20%
C. 30%
D. 40%
E. 60%

Answer: B

Source: e-GMAT

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Source: Beat The GMAT — Problem Solving | Sun Jan 31, 2021 3:21 pm

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