To find the percentage of cookies that were sugar cookies, we first need to calculate the total number of cookies and then find out what percent of that total were sugar cookies.
-
Calculate the total number of cookies: \[ \text{Total cookies} = \text{Chocolate chip cookies} + \text{Sugar cookies} = 13 + 21 = 34 \]
-
Calculate the percentage of sugar cookies: \[ \text{Percentage of sugar cookies} = \left( \frac{\text{Sugar cookies}}{\text{Total cookies}} \right) \times 100 \] \[ = \left( \frac{21}{34} \right) \times 100 \] \[ = 0.617647 \times 100 \approx 61.7647 \]
So, rounding to one decimal place, the percentage of sugar cookies is approximately 61.8%.
Thus, the answer is: 61.8%
1 answer