Question

Find the unit rate. Enter your answer as a mixed number.A fertilizer covers 3/4 square foot in 1/4 hour.

The unit rate is _________ square feet per hour.

Answer 1

3 ft^2/hour

Explanation:

We are looking for a finished unit of (square feet)/hour.

We are given (3/4) ft^2 and a time of (1/4) hour.

Divide the area by the time: [(3/4)ft^2]/[(1/4)hour] This produces a unit of ft^2/hour.

Bring the unit out and then simplify the ratio:

(3/4)/(1/4) ft^2/hour

(3/4)*(4/1) ft^2/hour

The 4's cancel, leaving (3/1) or 3 ft^2/hour