Ranga got thrice as many sums wrong as he got right in a mathematics assignment. If he attempted 72 sums in all, how many did he solve correctly in his mathematics assignment?
Show answer & explanation
Correct answer: D
Explanation
Let the number of sums solved correctly be x.
According to the question, the number of wrong sums = 3x.
Total sums attempted = Correct sums + Wrong sums
Thus, Ranga solved 18 sums correctly.
Correct Option: (D)