Let's consider the effects of inflation in an economy composed of only two people: Bob, a bean farmer, and Rita, a rice farmer. Bob and Rita always consume equal amounts of rice and beans.
In 2010, the price of beans was $1, and the price of rice was $3. If inflation is negative, enter your answer as a negative number.
1. Suppose that in 2011 the price of beans was $2 and the price of rice was $6. What was the inflation rate?