Question

When a number is decreased by 4.5%, the result is 90. What is the original number to

the nearest tenth?

Answer 1

x = 94.2

Explanation:

Let x represent the number

x - 4.5%x = 90

x - 4.5/100x = 90

x - 0.045x = 90

0.955x = 90

Divide both sides by 0.955(the coefficient of )

x = 90/0.955

x = 94.2