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     EduGorilla 
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    A factory uses two machines, M1 and M2 to manufacture three types of soap, P, Q and R. The two machines operate 8 hours a day each. The efficiency of the two machines with respect to the three types of soap is given in the table below. The numbers indicate the time taken (in minutes) by the two machines to manufacture one unit each of the three types of soap.

    If the efficiency of a machine is defined as the total maximum number of sets of soaps P, Q and R manufactured in a day, what is the ratio of the efficiency of the first machine to that of the second?

    Options :-

    1. 0.875

    2. 1.142

    3. 0.857

    4. 1.166

    5. none of the above

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