Question

6. 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.
please help me in this question
of standard 8
chapter- linear equations in one variable.
Page no. 35​

Answer 1

Answer:

     Hari's age = 20 years

     Hary's age = 28 years

Step-by-step explanation

Ratio of their present ages = 5:7

Let Hari's age = 5x

Let Harry's age = 7x

Four years later = Hari's age = 5x + 4

                               Harry's age = 7x + 4

Therefore , 5x + 4 / 7x + 4 =  3/4

                 4 [ 5x + 4 ] = 3 [ 7x+ 4]

                  20 x + 16 = 21x + 12

                 20x-21x = 12-16

                  -x = -4

                    x = 4

 5x = 5 * 4 = 20

 7x = 7 * 4 = 28