In a class if 50 of the boys were girls then there would be 50 more girls than boys What percentage ...........

Quant (SSC) Percentage

In a class, if 50% of the boys were girls, then there would be 50% more girls than boys. What percentage of the overall class is girls?

25%

33.33%

40%

20%

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Explanation:

In the final state, the number of girls should be 1.5 * the number of boys.
When 50% of the boys are taken as girls, let the number of boys = x
Number of girls = 1.5x
Total number of students = 2.5x
Original number of boys = 2x (50% of boys = x)
Original number of girls = 0.5x
Girls form 20% of the overall class.