The mass of coal in a railroad car is 60 tons. A dump truck can take a third of this cargo.
| March 16, 2021 | education
The mass of coal in a railroad car is 60 tons. A dump truck can take a third of this cargo. How many trips must be done on a dump truck to unload 6 such cars.
To answer the question of the problem, you need to know how many tons of coal are in all the wagons, and you also need to know the mass of cargo that can be transported on a dump truck in one trip.
1. Let’s determine how many tons of cargo a dump truck can take.
60 * 1/3 = 60 * 1/3 = 20 tons.
2. Let’s find out what the mass of coal in six cars is equal to.
60 * 6 = 360 tons.
3. Let’s calculate how many trips must be made on a dump truck in order to unload all the cars.
360/20 = 18 flights.
Answer: To unload all the wagons on a dump truck, you need to make eighteen trips.
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