Question

t takes Engineer Kweku three hours to drive to his brother’s house at an average speed of 50 miles per hour. If He takes the same route home, but his average speed is 60 miles per hour, what is the time, in hours, that it takes him to drive home?

Answer 1

Answer:

Distance = 50 mph×3hr = 150miles

Time needed if speed is 60mph

= 150/60 = 2.5 hours

Explanation:

Answer 2

The time in hours that it takes him to drive home = 2.5 hours.

• Total distance covered = (total speed) * (total time)

• According to the question,

Distance = 50 miles per hour * 3 hour

               = 150 miles

• Time in hours it takes him to drive home = distance / average speed

                                                                         = 150 miles / 60 miles per hour

                                                                         = 2.5 hours