Rates, SM-Bank 072 MC Gayle decorated 162 cookies in 9 hours. What was her average decorating speed in cookies per hour? 18 cookies/hour 55 cookies/hour 153 cookies/hour 1458 cookies/hour Show Answers Only \(A\) Show Worked Solution \(\text{Average speed}\) \(=\dfrac{\text{Cookies decorated}}{\text{Time}}\) \(= \dfrac{162}{9}\) \(=18\ \text{cookies/hour}\) \(\Rightarrow A\)