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3 brothers age problem

Source: Spanish Mathematical Olympiad 1983 P8

December 23, 2022
algebranumber theorysystem of equations

Problem Statement

In 19601960, the oldest of three brothers has an age that is the sum of the of his younger siblings. A few years later, the sum of the ages of two of brothers is double that of the other. A number of years have now passed since 19601960, which is equal to two thirds of the sum of the ages that the three brothers were at that year, and one of them has reached 2121 years. What is the age of each of the others two?