Solution: Find the sum of the ages of John and Mark

JJ is 3 times as old as Jan-Jan. Three years ago, JJ was four times as old as Jan-Jan. The sum of their ages is? How to solve age problems?

The sum of their ages is?

Problem Statement:

John is 3 times as old as Mark. Three years ago, John was four times as old as Mark. The sum of their ages is?

Problem Answer:

The sum of their ages is 36 years.

Solution:

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