Question

Population of a town increases by 5% during the first year and by 7% during the second year at the end of second year the population was 40446 what was the population at the beginning

Answer 1

let population be x
so
40446=x(1+5/100)(1+7/100)
40446=x(105/100)(107/100)
x=40446×100×100/105×107
x=3.6×10000
x=36000