Question

Two numbers are in the ratio of 5:8 .If 4 is subtracted from each then the ratio become 1:2.The small number is

Answer 1

Step-by-step explanation:

Let the number be 5x and 8x

then

=> 5x-4/8x-4 = 1/2

By cross multiplication

=> 2(5x-4) = 1(8x-4)

=> 10x-8 = 8x-4

=> 10x-8x= -4+8

=> 2x= 4

=> x = 4/2

=> x = 2

then

5x = 5×2 = 10

8x = 8×2 = 16

The small number is 10

I hope this will help you......