The sum of the ages of three friends is 188 years. What was the sum of their ages 10 years ago?
The logic followed here is:
Logic: When finding combined ages “x years ago” for n people, subtract n × x from the current total.
Given:
The sum of the ages of three friends now = 188 years
We need to find the sum of their ages 10 years ago
Here,
10 years ago, each of the three friends was 10 years younger.
So, the total reduction in their combined ages = 10 × 3 = 30 years
So, Sum of ages 10 years ago = 188 − 30 = 158.
: Hence, the correct answer is 'Option A'.
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The average age of 28 students of a class is 40 years. If the age of the teacher is also included, the average age of the whole group becomes 41 years. The age (in years) of the teacher is:
The sum of the ages of three friends is 188 years. What was the sum of their ages 10 years ago?
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