Question

sonu's grandmother is 80 years old and sonu is 20 years old .how many years ago was his grandmother 7 times old as sonu

Answer 1

Let the no.of years be x
x years ago, grandmother's age was= 80-x , sonu's age was= 20-x
as per question,
80-x=7(20-x)
=>80-x = 140-7x
=>6x=60
=>x=10
so, 10 yrs ago sonu's grangmother was 7 times as he

Answer 2

Answer:

10 yrs ago sonu's grangmother was 7 times as him.

Step-by-step explanation:

Given:

Sonu's grandmother age= 80 years

Sonu's age= 20 years

To find:

How many years ago was his grandmother 7 times old as Sonu.

So for finding the answer,

Let us assume,

Let the numbers of years be x.

Therefore we can say:

x years ago sonu's grandmother ages's was 80-x years and

Sonu's age be 20-x

Now as per the given conditions in question:

80-x=7(20-x)

=>80-x = 140-7x

=>6x=60

=>x=10

Hence, 10 yrs ago sonu's grangmother was 7 times as him.