Question

Aneesha travels at a rate of 50 miles per hour. Morris is traveling 3 feet per second less than Aneesha. Which is the best estimate of the speed Morris is traveling?

1 mile = 5,280 feet

45 miles per hour
46 miles per hour
47 miles per hour
48 miles per hour

Answer 1

3 feet per second = 3 * 3600 = 10.880 feet per hour

= 10880 / 5280 = 2.05 mph

Answer is 50 - 2 = 48 mph

Its D

Answer 2

First find the number of seconds in an hour:

60 seconds per minute x 60 minutes per hour = 3600 seconds per hour.

Now multiply 3 feet by 3600 seconds to find out how many feet per hour:

3 x 3600 = 10,800 feet per hour slower

Divide 10,800 by 5,280 ( feet in a mile) = 2.05 miles per hour slower (Round to 2 miles per hour)

Now subtract that from Aneesha's speed:

50 - 2 = 48 miles per hour