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There are three piles of coal with a total weight of 27 tons. If 1.5 tons of coal is transported from the first pile and the second pile to the third pile, the mass ratio of the first pile, the second pile and the third pile is 1:2:3 How many tons of each of these three tons of coal?
27/(1+2+3)=4.5…………………… One part of coal is 4.5 tons
4.5+1.5=6………………………… The first pile of coal weighs 6 tons
4.5*2+1.5=10.5…………………… The second pile of coal weighs 10.5 tons
27-6-10.5=10.5…………………… The third pile of coal weighs 10.5 tons
There is a pile of coal. The first pile accounts for 1 / 4 of the total. The tonnage of the second team is 7 / 8 of the third pile. The first pile is 42 tons less than the second pile. How many tons of the second pile?
42÷【（1-1/4）×7/（7+8）-1/4】×1/4+42
=42÷【3/4×7/15-1/4】×1/4+42
=42÷【7/20-1/4】×1/4+42
=42÷1/10×1/4+42
=420×1/4+42
=105+42
=147 tons
For a pile of coal, the ratio of tons transported in the first day to the total tons is 1:4. After 4.5 tons transported in the second day, one third of the total coal is transported in two days. How much is the pile of coal
4.5 ÷ (1 / 3-1 / 4) = 4.5 ÷ 1 / 12 = 54 tons
There are two piles of coal with a total weight of 360 tons. The first pile is one fourth more than the second pile. How many tons of coal are there in each pile
The second pile 360 △ 1 + 1 / 4 + 1 = 360 △ 9 / 4 = 160 tons
First batch 360-160 = 200 tons
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