Calculate how much higher U.S. labor productivity will be in the year 2035 (relative to 2015) if: (LO1)

a. Productivity continues to grow by 2.6 percent per year.

b. Productivity growth falls to 2 percent per year, its average rate during the period 1970–2009. (Note: You do not need to know the actual values of average labor productivity in any year to solve this problem.)