What percent of the children in class \(k\) have been to

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What percent of the children in class \(k\) have been to London?

1) The number of boys in class \(k\) is equal to the number of girls in class \(k\).
2) Among the children of class \(k\), the number of girls that have been to London is equal to the number of boys that have been to London.

The OA is E

Source: Economist GMAT
Source: — Data Sufficiency |

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by Jay@ManhattanReview » Tue Oct 08, 2019 10:37 pm
swerve wrote:What percent of the children in class \(k\) have been to London?

1) The number of boys in class \(k\) is equal to the number of girls in class \(k\).
2) Among the children of class \(k\), the number of girls that have been to London is equal to the number of boys that have been to London.

The OA is E

Source: Economist GMAT
Even after combining both the statements, we cannot get the answer as we do not know what proportion of class strength, the number of boys or the number of girls went to London.

The correct answer: E

Hope this helps!

-Jay
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