Question

5% of the population of a town were killed in a earthquake and 8% of reminder left the town if the population of the town now is 43700 what was it for pollution at the beginning​

Answer 1

Let the initial Population of the town be x

Then Population of the town after the earthquake = x - 5% of x

                                                                                             = 19x/20

Population of town after the 8% left the town = 19x/20 - 8% of 19x/20

                                                                                   = 437x/500

This population is equal to 43700

=>   437x/500=43700

=>   x= 50000

So, Population of the town at the beginning was 50000