Question

A train travels from city A to city B. It leaves A at 10:30 AM

and arrives at B at 1:15 PM. The distance between the cities is 141
miles. What was the average speed of the train in miles per hour
(mph

Answer 1

51.3 mph

Explanation:

First, we find the time.

1:15 pm - 10:30 am = 13:15 - 10:30 = 12:75 - 10:30 = 2:45

Now we convert 2:45 into a decimal number.

2:45 = 2 h + 45 min = 2 h + 45 min × (1 h)/(60 min) = 2.75 h

speed = distance/time

speed = 141 miles / 2.75 hours

speed = 51.272727... mph

Answer: 51.3 mph