Keisha, a scheduler at Mangel-Wurzel Transport, gets a call from a regular customer needing to move 70.3 m of rock and soil, which Keisha kn

Question

Keisha, a scheduler at Mangel-Wurzel Transport, gets a call from a regular customer needing to move 70.3 m of rock and soil, which Keisha knows from previous experience has an average density of 880 kg/m”. Keisha has available a dump truck with a capacity of 9 m and a maximum safe load of 5300 kg. Calculate the number of trips the dump truck will have to make to haul the customer’s load away.

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Đan Thu 3 years 2021-07-27T11:38:11+00:00 1 Answers 264 views 0

Answers ( )

  1. MichaelMet
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    2021-07-27T11:39:46+00:00
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    Answer:

    “12 trips” is the correct answer.

    Explanation:

    Given:

    Density,

    = 880 kg/m

    Volume,

    = 70.3 m³

    Safe load,

    = 5300 kg

    Now,

    The total mass of dump will be:

    = Density\times Volume

    = 880\times 70.3

    = 61864 \ Kg

    By going through the safe mode, the number of trips will be:

    = \frac{Total \ mass}{Safe \ load}

    = \frac{61864}{5300}

    = 11.57 \

    hence,

    By going through the volume, the number of trips will be:

    = \frac{70.3}{9}

    = 7.8

    Thus the truck needs to make 11.57 trips i.e., 12 trips.

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