Mathematics, 19.03.2020 01:38 palomaresmitchelle

Kevin built a compound machine
designed to lift a 1 kilogram load. He
tested the machine several times using a
can of sand as the load and a can of
sand for the input force. He added sand
to the input can until the machine lifted
the load. After running the machine
three times he calculates an average
efficiency of 72%. If two of his
calculations were 70% and 73%, what
was his third calculation?

Answers: 2

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Kevin built a compound machine
designed to lift a 1 kilogram load. He
tested the machine...