Final answer:
M8 and M9 paper are sizes of paper in the metric system. The time it takes to use them depends on the rate of consumption and quantity used.
Step-by-step explanation:
The question is asking how long it will take to use M8 or M9 paper. However, the term 'M8' or 'M9' does not indicate a specific unit of measurement for time. 'M8' and 'M9' are actually sizes of paper used in the metric system.
M8 paper measures approximately 2250 mm x 1750 mm, while M9 paper measures approximately 2540 mm x 2050 mm. Therefore, the time it will take to use M8 or M9 paper depends on how much of the paper is being used and the rate at which it is being consumed.