Question

20.25 is 112.5% of what number?
a) 18
b) 25
c) 22.5
d) 40

Answer 1

20.25 is 112.5% of the number 18. The problem is solved by setting up and solving the equation 1.125x = 20.25, where x is the number we're trying to find.

Step-by-step explanation:

The question asks to find the original number when 20.25 is given as 112.5% of that number. To solve this problem, you can set up the equation 1.125x = 20.25, where 1.125 represents 112.5% in decimal form, and x is the number we're trying to find. To find x, divide both sides of the equation by 1.125:

x = 20.25 / 1.125

x = 18

Therefore, 20.25 is 112.5% of 18, which means the correct answer is option a) 18.