Question

The total of the ages of A, B, and C is 80 years. What was the total of their age three years ago?

• A. 71 years
• B. 72 years
• C. 77 years
• D. 79 years

Hint:

For age-related problems, always subtract the total years from the current sum based on the number of years ago.

Answer 1

The Correct Option is B

To find the total of the ages of A, B, and C three years ago, we start with the given information: the current sum of their ages is 80 years. To determine their total ages three years ago, we need to subtract 3 years from each of their ages. Mathematically, you can express that calculation as follows:

The total age currently = A + B + C = 80 years.

Three years ago, each person was 3 years younger, so:
(A - 3) + (B - 3) + (C - 3)
= A + B + C - 3*3
= 80 - 9
= 71 years.

Thus, the total of their ages three years ago was 71 years.