Answer
$\dfrac{4}{9} \text{
meals per minute}$
Work Step by Step
Determine the increase in the number of meals served:
$=67−47=20$
Determine the time:
$=9:15−8:30=45$ minutes
The serving rate can be computed by dividing the number of meals served by the time:
Serving Rate = $\dfrac{20 \text{ meals}}{45 \text{ minutes}}=\dfrac{4}{9} \text{
meals per minute}$
