P=5w+\dfrac{2}{3}t+\dfrac{3}{10}m

Speedy Courier Service delivers packages by car. The service uses the equation above to calculate P, the total fee in dollars to deliver a package. In the equation, w is the weight of the package in pounds, t is the amount of driving time in minutes required to deliver the package, and m is the number of miles the courier must drive to deliver the package. A customer has an 3-pound package that she needs delivered to a colleague 30 miles away. If the delivery fee is $54, what is the driver's average speed in miles per hour?

A)
B)
C)
D)

 


 

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