Two numbers are respectively 20 percent and 50 percent of a third number. What percent of the first number is the second number ?

Two numbers are respectively 30 percent and 40 percent less than a third number. What percent of the first number is the second number ?

The monthly income of a man is ₹ 16,000. 15 percent of it is paid as income-tax and 75% of the remainder is spent on rent, food, clothing, etc. How much money is still left with the man ?

During 2003, the production of a factory decreased by 25%. But during 2004, it (production) increased by 40% of what it was at the beginning of 2004. Calculate the resulting change (increase or decrease) in production during these two years.