Mr Lau used two printers with different printing rates for a printing job. He started Printer W at 12 02 and started Printer X two minutes later. He stopped both machines at 12 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 W at the time Mr Lau started Printer X?
- What was the difference in the number of pages printed by the two machines from 12 02 to 12 07?
- Which printer, W or X, has a faster 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)