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10 February, 21:46

The Westminster Widget Company has an old machine that can produce 50 widgets in five hours. Now they have purchased a new machine that can produce 30 widgets in two hours. Working together, how long will it take the two machines to produce 100 widgets?

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  1. 10 February, 22:04
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    Old machine: 50 widgets in 5 hours

    New machine: 30 widgets in 2 hours

    Old machine: 10 widgets per hour

    New machine: 15 widgets per hour

    Both machines: 25 widgets per hour

    (100 widgets) / (25 widgets per hour) = 4 hours

    Answer: It will take 4 hours.
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