Evaluate the following percent problem
40 is 80 percent (%) of what number?
Set up an equation
Let's call our missing number x.
Expressing this in terms of an equation, we get:
40 = 80% * x
Express this as a percentage
Percentage = percent number/100
| 40 = | 80x |
| 100 |
Multiply both sides by 100
| 40 * 100 = | 80 * 100x |
| 100 |
4000 = 80x
Divide each side by 80
| 4000 |
| 80 |
| = |
| 80x |
| 80 |
Cancel both 80
| 4000 |
| 80 |
| = |
| x = | 4000 |
| 80 |
Final Answer
40 is 80 percent (%) of 50
