The rates of return on Cherry Jalopies, Inc., stock over the last five years were $10$ percent, $11$ percent, $-8$ percent, $4$

percent, and $8$ percent. Over the same period, the returns on Straw Construction Company's stock were $16$ percent, $18$

percent, $-3$ percent, $1$ percent, and $16$ percent. What was the arithmetic average return on each stock over this period?

$($Enter your answers as a percent rounded to $1$ decimal place.$)$

Answer is complete but not entirely correct.