Percentages are ratios of an amount compared to 100. The percent change of an old to new value is equal to 100% x \({ new - old \over old }\).
If a mayor is elected with 82% of the votes cast and 81% of a town's 47,000 voters cast a vote, how many votes did the mayor receive?
| 21,700 | |
| 20,558 | |
| 31,217 | |
| 22,842 |