Amachine used to lift all crates of organes has an efficiency of 65%. If 65.000 J of work is done
tuliffacrate of orsanes how much work was put into it?

Given data

 efficiency (η) = 65 %

                       = 0.65

Machine provides (Work done by the machine) = 1300 × 50

                                                                                = 65000 J

efficiency (η) = work done by the machine ÷ work supplied to the machine

                                                     0.65 =  65000 ÷ Input work

Input work = 100000 J

                                                  = 100 KJ

Explanation:

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i just did this and got a 100.

0.55x745.7j and a calculator