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An outboard motor boat uses 2.2 x 106 Kj of chemical potential energy by combustion in the outboard engine. THe engine is able to transform

An outboard motor boat uses 2.2 x 106 Kj of chemical potential energy by combustion in the outboard engine. THe engine is able to transform 7.7 x 105 Kf of this chemical energy into useful work. Calculate the percent efficiency of the outboard engine. Please answer in the form ab.c%

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