Mathematics, 11.11.2019 18:31, priscillaan

Apassenger elevator in the sears tower in chicago can lift people 960 feet in 1 minute and 30 seconds. how fast must the friend elevator be traveling if it lifts cargo the same height but in 2 minutes and 30 seconds?

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Apassenger elevator in the sears tower in chicago can lift people 960 feet in 1 minute and 30 second...