Question

John should drive to his workplace and back to home. On the way to the workplace it was raining, so he drove at speed of 42mph. On the way back the rain was over so his speed was 54mph. What was John's average speed, for the whole trip?

Answer 1

48 mph.

Explanation:

You need to calculate the average. So,

42 + 54 = 96

Because there are two quantities, 42 and 54, divide 96 by 2.

The average speed is 48.

Answer 2

John's average speed is 48mph

Speed is the rate of distance with time. It Is a scalar quantity and it is measured in m/s. speed is expressed as

speed = distance/time

Average is the ratio of the total distance to the total time taken.

or it can be the addition of initial speed and final speed divided by 2

Therefore;

John's average speed = (42 + 54)/2

= 96/2

= 48mph

Therefore, John's average speed is 48mph