Final answer:
The original number before adding 10% is 120, which, after adding the 10%, becomes 132.
Step-by-step explanation:
To find a number when given that 10% more than that number is 132, we can represent the number as x. Thus, 10% more than x is x plus 10% of x, which equals 1.10x. We set up the equation 1.10x = 132. To solve for x, divide both sides of the equation by 1.10:
- 1.10x = 132
- x = 132 / 1.10
- x = 120
The number before the 10% increase is 120.