From a group of boys and girls, 15 girls leave. They are then left 2 boys for each girl. After this, 27 boys leave. There are then 5 girls for each boy. Find the number of girls in the beginning
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+27) and number of girls were 5x   Hence, 2(5x) = x + 27   =&gt; 10x = x + 27   =&gt; x = 3   Number of girls in the beginning = (5x + 15) = (5×3 + 15) = 30   Answer is 30.
<result>C</result>
From a group of boys and girls, 15 girls leave. They are then left 2 boys for each girl. After this, 27 boys leave. There are then 5 girls for each boy. Find the number of girls in the beginning