Mathematics, 06.10.2019 14:30 djnkyworld

This sign shows when an elevator is safe to use: total mass of people must be 480kg or less
fred and some other people are in the elevator and their total mass is 565kg to the nearest 5kg.
fred, who has a mass of 88kg to the nearest kg, gets out of the elevator.
is the elevator safe to use?
you must show your working and state whether it is safe or not

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This sign shows when an elevator is safe to use: total mass of people must be 480kg or less
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