Question

If 45 is added to half a number, the result is triple the number. find the number

Answer 1

18

Explanation:

x = number

45 + 1/2 x = 3x

45 = 2.5 x

x = 45/2.5 = 18

Answer 2

18

Explanation:

Hello!

"Half a number" can be represented by 0.5x and "triple the number" can be represented by 3x.

This just becomes a one variable equation: 45 + 0.5x = 3x

Solve:

• 45 + 0.5x = 3x
• 45 = 2.5x
• 18 = x

The missing number is 18.