Question

90% of what equals 81?? Please show how you got the answer!!

Answer 1

90

Explanation:

First you want to divide 81 by 90%. You do this because 81 is the number you have and 90 is the percent you have.

81/90% = 90

Doing this will get you 90. This works for all percentages too.

Also you can check your answer by reversing this.

90 × 90% = 81

Answer 2

0.9x = 81
x = 81/0.9 = 90
the answer is 90