Question

the age of hari and Harry are in ratio 5:7. Four years from now the ratio of their ages be 3:4. Find their present age
Find the answer!​

Answer 1

Step-by-step explanation:

Let the age of hari be 5x + 4 and harry be 7x + 4

Your answer is,

$\frac{5x+4}{7x+4} = \frac{3}{4}\\\\4(5x+4) = 3(7x+4)\\20x + 16 = 21x + 12\\20x - 21x = 12 - 16\\-x = -4\\x = 4$

Hence Haris present age will be, 5x = 20 years and Harrys age will be 7x = 28 years