Mathematics, 25.11.2020 23:00 ColungaRosemary

This sign shows when a lift is safe to use. "Total mass of people must be 480 kg or less"
Fred and some other people are in the lift 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 lift. Is the lift now safe to use?
You must show your working and clearly state 'Yes it is safe' or 'No it is not safe'.

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This sign shows when a lift is safe to use. "Total mass of people must be 480 kg or less"
Fre...

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