David drives 240 miles from Edinburgh to York. He drives the first 90 miles at an average speed of 45 mph. From this point, it takes David 2 hours and 48 minutes to complete his journey.
What was David's average speed for the whole journey?
203 exam-style questions on CCEA GCSE Maths Speed and Density. Each one has a worked solution and a mark scheme showing where the marks go.