Question

the age of Hari and harry are in the following ratio 5.7 four years ago now the ratio of their ages will be 3:4 find their parents ages.
​

Answer 1

Answer:

The ratio of Hari's and Harry's present ages is 5:7

So, let their ages be 5x and 7x

After 4 years their ages will be in ratio 3:4

Therefore,(5x+4)/(7x+4)=3/4

or, 4(5x+4)=3(7x+4)

or, 20x+16=21x+12

or, 16−12=21x−20x

or, 4=1x

or, x=4

Step-by-step explanation:

I hope that u understand

mark as brainlist

Answer 2

Answer:

let the present age of Harri = 5

let the present age of Harry= 7

Step-by-step explanation:

According to question

(5x+4) : (7x+4) = 3:4

5x+4/7x+4=3/4 (cross multiply)

3(7x+4) 4(5x+4)

(21x+12) (20x+16)

21x - 20x = 16-12

x=4

present age of Harri is 5×4 = 20 years

present age of Harry is 7×4 = 28 years