Simplification question for IBPS, SBI, RBI, clerk, PO, Railways, SSC

[Q] In a class there are equal number of boys and girls. Eight girls left the room, leaving twice as many boys as girls in the room . What was the total number of boys and girls present in the room initially?
(a) 14
(b) 32
(c) 33
(d) 24

Solution

Answer    (b)
Explanation
----
Assume that initial number of boys = initial number of girls = x

2(x-8) = x
=> 2x - 16 = x
=> x = 16

Total number of boys and girls = 2x = 2 × 16 = 32