The age

Algebra Level pending

The age of Marvin 15 years from now is 7 times his age 15 years ago. How old is he now?


The answer is 20.

A Former Brilliant Member by A Former Brilliant Member

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2 solutions

Saksham Jain
Nov 8, 2017

LET AGE X X+15=7(X-15) SOLVING IT WE GET 20

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Letting x be the age of Marvin now yields into the equation x+15=7(x-15) and x=20.

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