Question

(3) The ratio of two numbers is 5 : 7. If 40 is added in each number, then the ratio
becomes 25:31, Find the numbers.​

Answer 1

The ratio of two numbers is 5 : 7

Let the two numbers 5x & 9x

When 40 is added the two numbers become:- 5x + 40 & 7x +40

Then the ratio becomes: 25:31

5x + 40 : 7x + 40 : : 25 : 31

31(5x+40) = 25(7x+40)

155x +1240 = 175x + 1000

20x = 240

x = 12