One third of the sum of 13 and a certain number is the same as one more than twice the number, find out the number?

A 6

B 2

C 5

D 3

Correct Answer: Option B

(13 + x)/3 = 2x + 1

13 + x = 6x + 3

or, 13 - 3 = 6x - x

or, 5x = 10

or, x = 2