The price of Desi Ghee has increased by 25%. By what percent should a family reduce the consumption of Desi Ghee so as not to increase the expenditure in this account?

A reduction of 21% in the price of rice enables a person to buy 10.5 kg more for Rs. 1,000. What is the reduced price of rice per kg?

A reduction of 10% in the price of sugar enables a person to buy 6·2 kg more for ₹2790. What is the reduced price per kilogram?

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

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

A city's population increases by 2.5% every year, while migration reduces it by 0.5% each year. What is the overall percentage increase in population after two years?