Mr Lu used two printers with different printing rates for a printing job. He started Printer Y at 19 02 and started Printer Z three minutes later. He stopped both printers at 19 07. 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 Lu started Printer Z?
- What was the difference in the number of pages printed by the two printers from 19 02 to 19 07?
- Which printer, Y or Z, has a faster printing rate? What is the difference in the number of pages printed by the printers in one minute? Give your answer in this format. (Eg A, 1)