Sam rowed 1.5 km in 6 minutes and 50 seconds.
He assumes he can row 5 km at the same speed.
Work out how long it would take Sam to row 5 km.
Give your answer in minutes and seconds to the nearest second.
Sam's speed actually decreases the further he rows.
How does this affect your answer to part (a)?
52 exam-style questions on AQA GCSE Maths Speed and Density. Each one has a worked solution and a mark scheme showing where the marks go.