Question

27 Keane drives his car 180 miles from his home in Bristol to Liverpool. He leaves his home at 09 30 and arrives in Liverpool at 12 42. Work out the average speed of Keane’s journey in mph.

Answer 1

The average speed of Keane’s journey in mph is 56.25 mph (miles per hour)

Calculating Average speed

From the question, we are to determine Keane's average speed

Average speed is given by the formula,

Average speed = Distance / Time

Distance travelled = 180 miles

Now, we will calculate the time spent

From the given information,

He leaves his home at 09:30 and arrives in Liverpool at 12:42

09:30 to 12:42 is 3 hours 12 minutes

∴ Time = 3 hours 12 minutes = 3 + (12/60) hours = 3.2 hours

Thus,

Average speed = 180 / 3.2

Average speed =  56.25 mph (miles per hour)

Hence, the average speed of Keane’s journey in mph is 56.25 mph (miles per hour)

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