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24 June, 20:50

Solve the problem as directed. The time it takes to lay a sidewalk of a certain type varies directly as the length and inversely as the number of men working. If eight men take two days to lay 100 feet, how long will three men take to lay 150 feet?

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Answers (2)
  1. 24 June, 23:19
    0
    150/18.75=18.75 feet per day

    150/18.75=17.14 days
  2. 25 June, 00:15
    0
    T = k L / N where k is the constant of variation

    2 = k * 100 / 8

    100k = 16

    k = 0.16

    so fromula is

    T = 0.16L / N

    when L = 150 and N = 3 we have

    Time taken T = 016 * 150 / 3 = 8 days answer
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Home » Mathematics » Solve the problem as directed. The time it takes to lay a sidewalk of a certain type varies directly as the length and inversely as the number of men working. If eight men take two days to lay 100 feet, how long will three men take to lay 150 feet?
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