Question

a number is three times the another number if sum of both the number 20 then find them ​

Answer 1

Let one number be x.

The other number is 3x.

By condition,

or, x+ 3x=20

or, 4x=20

or, x=20\4

or, x=5

Hence, the numbers are:

x=5, 3x=3×5=15.