Problema Solution
One of the world's largest dump trucks, is hauling debris at a mining site. On its first trip it hauls away 360 tons of rubble; on its second trip it hauls away 300 tons of rubble. If it hauls an average of 350 tons of rubble for all three trips, how much rubble did it haul on its last trip?
Answer provided by our tutors
Let x represent the truck hauled on its last trip
Question States***
(300 + 350 + x)/3 = 350 tons, the average for all three trips
Solving for x
(300 + 350 + x) = 350*3
650 + x = 1050
x = 400 tons
CHECKING our Answer
(300+350+400) / 3 = 1050/3 = 350tons