Question

The ages of Hari and Harry are in the ratio 5:7. Four years from now the ratio of their ages will be 3:4.Find their present ages.

Answer 1

5x+4/7x+4=3/4

20x+16=21x+12

x=4

Hari=20

Harry=24

Answer 2

Answer:-

Given:

Let's hari age is = 5x

than, harry age is = 7x

(4 years ago) -> (7x + 4) × 3 = (5x + 4) × 4

solution:

$\frac{5x + 4 }{7x + 4 } = \frac{3}{4}$

$(7x + 4) \times 3 = (5x + 4) \times 4$

$21x + 4 = 20x + 16$

$21x - 20x = 16 - 12$

${\boxed{\underline{x = 4}}}$

Hari age = 5x

= 5 × 4

= 20

Harry age = 7x

= 7 × 4

= 28

Therefore:

So,age = 20:28