Ahmed buys a box of 40 pens for £14.
He sells 30 of the pens for 55p each. He sells the remaining pens for 25p each.
Work out Ahmed's percentage profit. Give your answer correct to three significant figures.
Practise Edexcel GCSE Maths Percentage Change with exam-style questions for Foundation and Higher tier. 56 questions, matched to the Edexcel GCSE Maths (1MA1) specification and written in Paper 1, Paper 2 and Paper 3 style. Every question includes a full worked solution and mark scheme, so you can see where marks are awarded rather than just whether you got the answer right.