If the population of a town grew 11% up to 5,173, what was the population last year?

To find this answer, you would need to find 11% of 5,173 and subtract it. to find 11%, you would use the expression 5,173 x 0.11, which is 569.03, which we can round to 569. 5,173 - 569 = 4604. so last year, the population in that town was 4,604 people.