A town has population of 50,000 in 1998. In one year i.e. by 1999 it increased by 25%. Next year i.e. in 2000, it decreased by 30%. The next year in 2001 there was an increase of 40%. What is the population at end of 2001?

61250

Population in 1998 = 50,000

Population in 1999 = 50,000 + 25% of 50,000 = 62,500

Population in 2000 = 62,500 - 30% of 62,500 = 43,750

Population in 2001 = 43,750 + 40% of 43,750 = 61,250