A pile of steel was transported by one car. Five times on the first day, 50.5% of this batch of steel was transported. The next day, another time was transported by the same car There are 3.94 tons left. How many tons of steel are there in this pile?

It is designed to transport x tons at a time, with a total of Y tons
5x=50.5%y
y-6x=3.94
The solution is y = 10 tons

A car transports steel for a steel plant. It transports steel six times in the morning, with an average of 8.5 cubic meters each time. It transports steel four times in the afternoon, with a total of 28 cubic meters. How many cubic meters of steel does it transport on average this day?

The problem is too simple

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I used to make a kind of stone sieve, but the hardness of the steel plate of the car has not yet reached the required heat treatment. What kind of heat treatment process can you use, and how much hardness can you achieve

The maximum load of a truck is 10t, and the volume is 12m3. Now we need to transport two kinds of goods, steel and wood. How can these two kinds of goods be combined for shipment?

Iron per cubic meter 7.8 tons, wood per cubic meter 0.5 tons
Transportation of steel (10-0.5x12) / (7.8-0.5) = 4 △ 7.3 ≈ 0.55m3
Wood 12-0.55 = 11.45m3

A pile of steel was transported by one car. Five times on the first day, 50.5% of this batch of steel was transported. The next day, another time was transported by the same car There are 3.94 tons left. How many tons of steel are there in this pile?