Distance traveled by the cloud = 3/4 mileTime taken = 15 minutesTo convert 15 minutes to hours: [ \text{Time in hours} = \frac{15}{60} = \frac{1}{4} \text{ hour} ]Now, we can calculate the speed (rate) of the cloud in mph using the formula: [ \text{Speed} = \frac{\text{Distance}}{\text{Time}} ][ \text{Speed} = \frac{\frac{3}{4} \text{ mile}}{\frac{1}{4} \text{ hour}} ][ \text{Speed} = \frac{\frac{3}{4}}{\frac{1}{4}} \text{ mile/hour} ][ \text{Speed} = 3 \text{ mile/hour} ]So, the cloud travels at a speed of 3 miles per hour.
