1.The price of a machine depreciates at 10% every year. If the present value of the machine is $1,000,000 what will its value be after 3 years 2.Richard buys shares worth $20,000. If the price of his shares declines uniformly by 10% at the end of every year, how much money will he get by selling his shares after two years?

3.The value of a machine in a factory depreciates by 20% every year. At the end of 3 years, the price comes down to $12,800. what was the price of the machine 3 years back? ​