A conical sand pile covers an area of 20 square meters and is 6 meters high. Each square meter of sand weighs about 1.7 tons. If it is transported by a car with a carrying capacity of 5 tons How many times can this pile of sand be transported?

A conical sand pile covers an area of 20 square meters and is 6 meters high. Each square meter of sand weighs about 1.7 tons. If it is transported by a car with a carrying capacity of 5 tons How many times can this pile of sand be transported?

（20*6/3）*1.7/5=13.6
14 cars

There was a batch of cement on a construction site. After 20% of the cement was used up, it was transported back. The remaining 20% of the cement is now in use
There was a batch of cement in a construction site. After 20% of the cement was used, the remaining 20% of the cement was transported. The current cement quantity is the same as the original cement quantity before use (why

(1-20%)×20%+（1－20%）＝96%

The three cars transported 1350 cases of apples. A transported 200 cases more than B, and C transported 1001 cases less than A. how many cases of apples did C transport?
C than a less than 100 cases, not less than 1001

Let B transport x boxes, then a is x + 200 boxes, and C is x + 200-100 boxes, so we get the equation
x+(x+200)+(x+200-100)=1350
3x+300=1350
x=350
Because: A is x + 200 boxes, but x + 200-100 boxes, so a = 550 boxes, C = 450 boxes

Three cars transported 1350 cases of apples. Car a transported 200 cases more than car B, and car C transported 100 cases less than car A. how many cases of apples did car C transport? (simple equation)

Suppose a X
x+x-200+x-100=1350
3x-300=1350
3x=1650
x=550
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