An elevator in Goodtaste Baguio of 8 persons-capacity with a mass of 1750 kg plus unknown total mass of 8 persons initially at rest is lifted up at 0.75 m/s to the 6th floor dining hall of the restaurant that is 30 m high from the ground. Calculate the total mass of the 8 customers in kilograms riding the elevator if the total work done by the elevator is 757575 J.

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