From a group of boys and girls, 15 girls leave. There are then left 2 boys for each girl. After this, 45 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
A) 40	B) 30	C) 50	D) 60	E) 10
Let at present there be x boys.   Then,no of girls at present=5x   Before the boys had left:no of boys=x+45   40nd no of girls=5x   X+45=2*5x   9x=45   x=5   no of girls in the beginning=25+15= 
<gadget id="calculator">25+15</gadget>
<output>40</output>
40   40nswer is 40.
<result>A</result>
From a group of boys and girls, 15 girls leave. There are then left 2 boys for each girl. After this, 45 boys leave. There are then 5 girls for each boy. Find the number of girls in the beginning?