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March 26, 2017

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Sue can shovel snow from her driveway in 45 minutes. Jim can do the same job in 55 minutes. How long would it take them if they worked together?

  • Algebra - ,

    T = t1*t2 / (t1+t2),
    T = 45*55 / (45+55) = 24.75Min.

  • Algebra - ,

    Maria can shovel snow from her driveway in 50 min. Tom can do the same job in 55 minutes. how long would it take Maria and Tom to shovel the driveway if they work together?

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