Question

15% of what number is 3?

Answer 1

20

Explanation:

1. Find 1% 3 : 15 = 0.2
2. Find 100% 0.2 × 100 = 20%

• or solve with an expression

3 : 15 × 100 =

0.2 × 100 =

20

• or solve with an equation

3 : 15 = x : 100

x = 3 × 100 : 15

x = 20

Answer 2

Explanation:

15 % of x = 3

`(3x)/(20) = 3\\ x = 20`