A mother is now three times as old as her child and is 45 years old. How old will the child be in 6 years?

A) 22 years

B) 21 years

C) 20 years

D) 23 years

Answer: B

Explanation: Divide the mother’s age by 3 for the child’s age now, then add the years.
Child after 6 years = 45 ÷ 3 + 6 = 21 years.