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29 November, 18:05

Sara, Kim, and John own a painting company. To paint a particular home, Sara estimates it would take her 4 days. Kim estimates 5.5 days. John estimates 6 days. How long would it take them to work together to paint the house.

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  1. 29 November, 18:27
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    1.67 days

    Step-by-step explanation:

    Sara can finish 1/4 work a day

    Kim can finish 1/5.5 work a day

    John can finish 1/6 work a day

    if they work together one day can do: 1/4 + 1/5.5 + 1/6 = 79/132

    79/132 * x days = 1

    x = 132/79 = 1.67
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