In 2017, A is 9 years older than B who is five times as old as C. The total of the ages of A, B and C is 97 years. What would be the average of A and C ages in the year 2024 ?
OPtion
1) 31 years
2) 30 years
3) 33 years
4) 34.5 years
5) 36.5 years
6) 35.5 years
7) 29 years
8) 24 years
9) 35 years
10)None of these
Solution
Let’s assume Age of B be B years
Age of A = B+9
Age of C = B/5
Total age = B + 9 + B + B/5 = 97
Solving 11B/5 = 88
B = 40
A = B+9 = 40+9 = 49
C = 40/5 = 8
Age of A in 2024 = 49+7 = 56
Age of C in 2024 = 8+7 = 15