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 90% of the votes cast and 81% of a town's 20,000 voters cast a vote, how many votes did the mayor receive?
| 14,580 | |
| 11,178 | |
| 13,284 | |
| 10,206 |