At an indoor market, a baker, a potter, a café owner and a florist trade with each other and with their suppliers.
Which action removes the need for a double coincidence of wants?
The café owner buys coffee beans from a supplier by bank transfer
The florist agrees to repay borrowed money in monthly instalments
The potter prices a vase in pounds but accepts bread from the baker in payment
The baker swaps bread for flowers with the florist, who happens to want bread
82 exam-style questions on OCR GCSE Economics 2.8 The role of money and financial markets, covering 2.8.1 Money as a medium of exchange, 2.8.2 Role of the financial sector, 2.8.3 Importance of the financial sector, 2.8.4 Interest rates and saving, borrowing, investment, and 2.8.5 Effect of interest rate changes. Each one has a worked solution and a mark scheme showing where the marks go.