Rather than spending $100 today on paint today, you decide to save the money until next year,

Question:

Rather than spending $100 today on paint today, you decide to save the money until next year, at which point you will use it to paint your room. If a can of paint costs $10 today, how many cans will you be able to buy next year if the nominal interest rate is 21 percent and the expected inflation rate is 10 percent?