A warehouse worker sorts 50 parcels per hour. After training, the worker sorts 5 more parcels per hour.
Calculate the percentage increase in the worker's output per hour.
121 exam-style questions on OCR GCSE Economics 3.7 Supply side policies, covering 3.7.1 What are supply side policies and 3.7.2 Costs and benefits of supply side policies. Each one has a worked solution and a mark scheme showing where the marks go.