From a group of boys and girls, 15 girls leave. They are then left 2 boys for each girl. After this, 63 boys leave. There are then 5 girls for each boy. Find the number of girls in the beginning Choose the correct choice from the following options
A) 20  B) 10  C) 30  D) 50  E) 40
Assume the number of boys at present = x   Then, the number of girls at present = 5x   Before the boys left, the number of boys were (x+63) and number of girls were 5x   Hence, 2(5x) = x + 63   =&gt; 10x = x + 63   =&gt; x = 7   Number of girls in the beginning = (5x + 15) = (5×7 + 15) = 50   Answer is 50.
<result>D</result>
From a group of boys and girls, 15 girls leave. They are then left 2 boys for each girl. After this, 63 boys leave. There are then 5 girls for each boy. Find the number of girls in the beginning