Bunty's age is twice that of Ban's. Five years ago, Bunty was three times older than Ban. Find the age of Bunty.

Correct option is D

Given:

Bunty's age is twice that of Ban.

Five years ago, Bunty was three times older than Ban.

Solution:

Let Ban's age be x years.

Then, Bunty's age = 2x years.

Five years ago,

Bunty's age = (2x - 5) years

Ban's age = (x - 5) years

(2x - 5) = 3(x - 5)

2x - 5 = 3x - 15

2x - 3x = -15 + 5

-x = -10

x = 10

Bunty's current age:

Bunty's age = 2x = 2 × 10 = 20 years

Bunty's age is 20 years.