Multiple choice general knowledge math & puzzles

A student got twice as many sums wrong as he got right. If he attempted 48 sums in all, then how many he solves correctly?

  1. 12

  2. 16

  3. 18

  4. 24

Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Let $x$ be the number of correct sums. The number of wrong sums is $2x$. Total sums: $x + 2x = 48 \Rightarrow 3x = 48 \Rightarrow x = 16$. Thus, the student solved 16 sums correctly and 32 incorrectly.