Mr Chan used two printers with different printing rates for a printing job. He started Printer S at 12 39 and started Printer T one minute later. He stopped both machines at 12 44. The graphs show the total number of pages printed by each printer from the start of printing.
- How many pages had been printed by Printer S at the time Mr Chan started Printer T?
- What was the difference in the number of pages printed by the two machines from 12 39 to 12 44?
- Which printer, S or T, has a slower printing rate? What is the difference in the number of pages printed by the machines in one minute? Give your answer in this format. (Eg A, 1)