Colin walked a distance of 15 miles in 6 hours

Work out Colin's average speed
Give your answer in miles per hour

=2.5mph

rate in mph = distance in miles/time in hours

= ...

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To work out Colin's average speed, divide the distance he walked by the time it took him. In this case, Colin walked a distance of 15 miles in 6 hours. So, we can calculate his average speed as:

Average Speed = Distance / Time

Average Speed = 15 miles / 6 hours

To simplify this calculation further, we divide the distance by the time:

Average Speed = 2.5 miles/hour

Therefore, Colin's average speed is 2.5 miles per hour.