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?	Choose the correct choice from the following answers:
A) 25%
B) 33.33%
C) 40%
D) 20%
E) 10%
DETAILED SOLUTION   For questions of this type, it is best to go from the final step. 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.   CORRECT ANSWER 20%.
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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?