Emily drives 420 miles from London to Newcastle.
She drives the first 234 miles at an average speed of 72 mph.
From this point it takes Emily 2 hours and 45 minutes to complete her journey.
What was Emily's average speed for the whole journey?
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.