Rachel drives 300 miles from London to Newcastle.
She drives the first 165 miles at an average speed of 60 mph.
From this point it takes Rachel k k\,k hours to complete her journey.
What was Rachel's average speed for the whole journey in terms of kkk?
203 exam-style questions on WJEC GCSE Maths Speed and Density. Each one has a worked solution and a mark scheme showing where the marks go.