Question

the average age of three brothers is 15 years. if the age of two brothers is 15 years and 12 years, find the age of the third brother.

Answer 1

Given the average age of three brothers is 15 years.

Let the age of the third brother be x years.
Given age of two brothers is 15 years and 12 years.

Given average age =15 years
»15+12+x/3=15
»27+x=15×3
»27+x=45
»x=45-27
»x=18
Therefore age of the third brother =18 years.

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Answer 2

Here is your answer. Pls mark as the  brainliest