Question

Anna, Bob and Chris are altogether 31 years old. How old will all three be altogether in three years time? (A)32 (B)34 (C)35 (D)37 (E)40​

Answer 1

it will be 40

Explanation:

If they are altogether 31 years old now in 3 years we just add 9 thus it is 40

Answer 2

40

Explanation:

A+B+C = 31

Add 3 years to each age

A+3 +B+3 + C+3 = 31 +3+3+3

They will be

A+3 +B+3 + C+3 = 40