Problema Solution
The scoop of an excavator holds 27 ft3 of sand. If the capacity of a freight car is 40 tons of sand and we know that 1 ft3 of sand weighs 0.5 tons, how many freight cars can be filled with 120 loads?
Answer provided by our tutors
The problem statement is ambiguous... "120 loads" is referring to the number of cars or the number of scoops? We assume that each "scoop" is a "load".
we convert scoops from tons to cubic feet "27(1/0.5)"
and then divide by the tons per freight car:
(27(1/0.5)120)/40
162
So 162 freight cars would be required for 120 loads.