A student got twice as many sums wrong as he got right. If he attempted 24 sums in all, how many did he solve correctly ?
Choose the correct answer:
A) 12  B) 16  C) 8  D) 24  E) 26

Rationale: explanation : suppose the boy got x sums right and 2 x sums wrong . then , x + 2 x = 24 3 x = 24 x = 8 . answer : c
Answer: C