Population increases by 10% in first year and 20% in second. Present population 66,000. Population two years ago?

Population of a town was 150000 three years ago. It increased by 2%, 4% and 5% in the last three years. Present population?

The population of a town is 176400. If it increases annually at the rate of 5%, then what will be its population after two years?

A person spends 60% of income. Income increases by 15% and expenditure by 5%. Find percentage increase in savings.

A number is increased by 20% and then decreased by 20%. Net increase/decrease percentage?

If price is reduced by 25% and daily sale increases by 30%, net effect on daily sale is