How many trips should a truck make to transport 20m3 of bricks, if its carrying capacity is 5t.

The mass of the entire brick can be calculated using the formula:

m = ρ * V, where m is the mass of all bricks for transportation (kg), ρ is the density of the brick (ρ = 1800 kg / m³), V is the volume occupied by the brick (V = 20 m³).

Let’s calculate the change in the mass of bricks for transportation:

m = ρ * V = 1800 * 20 = 36000 kg.

Number of truck trips:

N = m / m1, where m1 is the carrying capacity of the truck (m1 = 5 t = 5000 kg).

N = m / m1 = 36000/5000 = 7.2 (8 flights).

Answer: The truck has to make 8 trips.