Michael ran 3.6 miles in 15 minutes and 24 seconds.
He assumes he can run 7 miles at the same speed.
Work out how long it would take Michael to run 7 miles.
Give your answer in minutes and seconds to the nearest second.
Michael's speed actually decreases the further he goes.
How does this affect your answer to part (a)?
203 exam-style questions on OCR GCSE Maths Speed and Density. Each one has a worked solution and a mark scheme showing where the marks go.