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.

Answer 1

"12 trips" is the correct answer.

Step-by-step explanation:

Given:

Density,

= 880 kg/m

Volume,

= 70.3 m³

Safe load,

= 5300 kg

Now,

The total mass of dump will be:

=
`Density* Volume`

=
`880* 70.3`

=
`61864 \ Kg`

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

=
`(Total \ mass)/(Safe \ load)`

=
`(61864)/(5300)`

=
`11.57 \`

hence,

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

=
`(70.3)/(9)`

=
`7.8`

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