Question

the ratio between the present ages of jyoti and Amit is 8:9 respectively. after four years jyoti's age will be 28 years. what was amit' s age 8 years ago?

Answer 1

let, Jyoti's age be 8 x
Amit's age be 9x
then, 8x + 4= 28
8x = 28-4
8x =24
x=24/8 = 3
so, Amit's present age = 9*3=27
so, Amit's age 8 years ago! = 27-8= 19
19 is answer.

Answer 2

Given :

The ratio between the present ages of jyoti and Amit is 8:9 respectively.

To find :

after four years jyoti's age will be 28 years. what was amit' s age 8 years ago?

Solution:

The ratio between the present ages of jyoti and Amit is 8:9 respectively.

Let the ratio be x

So, Jyoti's present age = 8x

Jyoti's age avter 4 years = 8x+4

After four years jyoti's age will be 28 years

$\Rightarrow 8x+4=28\\\Rightarrow 8x=24\\\Rightarrow x=3$

Amit's present age = 9x =9(3)=27 years

Amit's age after 8 years = 27+8=35 years

Hence Amit's age after 8 years is 35 years