the sum of two numbers is 20.one number is 3 time the other number . find the two numbers?

Answer 1

a = first numbner

b = second number

b = 3 a

a + b = 20

a + 3 a = 20

4 a = 20 Divide both sides by 4

a = 5

b = 3 a = 3 * 5 = 15

The two numbers:

5 and 15