Percentage - General Questions

120 is what percent of 200?

The population of a town is 23,000. It increases by 20% every year. What will the population be after 2 years?

A's salary is 20% more than B's. By what percent is B's salary less than A's?

160 is what percent of 200?

The price of an item is first increased by 25% and then decreased by 20%. What is the net change in price?