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 81% of the votes cast and 75% of a town's 42,000 voters cast a vote, how many votes did the mayor receive?
| 28,035 | |
| 23,625 | |
| 25,515 | |
| 25,200 |