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28 March, 16:20

Tom and Sam can finish a plowing job in two hours. Tom working alone can do the job in 7 hours. How long would it take Sam to finish the same job alone?

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  1. 28 March, 16:45
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    Step-by-step explanation:

    1X+17=121X+17=12

    1X=12-171X=12-17

    1X=72*7-27*21X=72*7-27*2

    1X=7-2141X=7-214

    1X=5141X=514

    Taking inverse on both sides

    X=145=2.8 hoursX=145=2.8 hours

    The time taken by Sam is 2.8 hours. 2.8 hours.
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