The rates of return on Cherry Jalopies, Inc., stock over the last five years were 21 percent, 11 percent, −10 percent, 6 percent, and 11 percent. Over the same period, Straw Construction Company’s...

The rates of return on Cherry Jalopies, Inc., stock over the last five years were 21 percent, 11 percent, −10 percent, 6 percent, and 11 percent. Over the same period, Straw Construction Company’s stock returns were 16 percent, 14 percent, −3 percent, 4 percent, and 16 percent. What was the arithmetic average return on each stock over this period?