How is market supply at a given price calculated?
By subtracting the smallest firm's supply from the largest firm's
By adding the quantities supplied by all producers at that price
By multiplying quantity demanded by price
By adding producers' selling prices
81 exam-style questions on OCR GCSE Economics 2.3 Supply, covering 2.3.1 What is supply, 2.3.2 Draw a supply curve using data, 2.3.3 Explain a supply curve, 2.3.4 Shifts and movements of the supply curve, 2.3.5 Causes and consequences of supply changes, 2.3.6 Price elasticity of supply, 2.3.7 Draw supply curves of different elasticity, and 2.3.8 Importance of price elasticity of supply. Each one has a worked solution and a mark scheme showing where the marks go.