Math, asked by anirudhajith112, 1 year ago

Sonu's grandmother is 80 years old and sonu is 20 years old.How many years ago was his grandmother 7 time as old as sonu?

Please answer fast!!!

Answers

Answered by arinjayjain24
5
Let the time be x years ago
(80-x) = 7(20-x)

80-x=140-7x
6x = 60
x = 10

The age of grand father's age was 7 times as old as sonu 10 years ago.
At that time his age was 80 - 10 yrs
=70yrs
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