Mr Yang used two printers with different printing rates for a printing job. He started Printer Y at 18 36 and started Printer Z one minute later. He stopped both machines at 18 41. 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 Y at the time Mr Yang started Printer Z?
- What was the difference in the number of pages printed by the two machines from 18 36 to 18 41?
- Which printer, Y or Z, 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)