Question

The sum of two numbers is equal to thrice their difference. If the smaller of the number is 10. Find the other number?​

Answer 1

Let, the larger number be, 'x'

By condition,

x+10 = 3(x-10)

or, x+10 = 3x-30

or, 10+30 = 3x-x

or, 2x = 40

or, x = 40/2

or, x = 20

So, the other number is 20.