Question

the 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 the Original Population to be x
so
40446= x (1 + 5/100)(1+ 7/100)
40446=x(21/20)(107/100)
40446= 321x/2000
80892000= 321x
80892000/321=x
original population = 252000