Question

Nine added to thrice a whole number gives 45. Find the number

Answer 1

Let the whole number required to be x.

Thrice the whole number = 3x

Nine added to it = 3x + 9

Given 3x + 9 = 45

3x + 9 – 9 = 45 – 9 ...[Subtracting 9 on both sides]

3x = 36

`(3x)/3 = 36/3`

x = 12

∴ The required whole number is 12