Aging quiz

Algebra Level 2

Mr. Satti has 3 3 sons. The oldest son is 20 20 years old. The sum of 2 2 times second son's age and 5 5 times third son's age is 97. 97. Find the age difference between Mr.Satti's first son and third son.


The answer is 7.

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1 solution

Bhanu Prakash A
Apr 25, 2014

2x+5y=97 x and y takes only integers and y has to take only odd values from 1 to 19 because x will be integer on trial and error method only y= 13 holds good since elder brother is 20 years

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