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A barrel of oil weighs 45 kg, and 37% of the oil in the barrel is poured out. The barrel weighs 27 kg______ Kilogram
45 - (45-27) △ 37 = 45-18 △ 37 = 45-42 = 3 (kg) a: the barrel weighs 3 kg
A barrel of oil weighs 10 / 3 of the barrel. After using 2 / 3 of the oil, it weighs 7 / 3 of the barrel. How many kilos does the barrel weigh?
In the process of finding the formula, the students can understand it. All the places of the score should use one of a certain, not one of a certain
Hello
This question is useless
A barrel weighs 10 / 3 of a kilogram
After using it, even the bucket is heavy
It weighs 7 / 3 of a barrel
therefore
10 / 3 - 7 / 3 = 3 / 3, which is 1kg. This is 1kg, which is the weight of barrel + the weight of used oil
Because 2 / 3 oil is used, the weight of barrel is 1kg-2kg = 1 / 3
Please accept! Hand fight!
A barrel of oil weighs 10 / 3 kg. After using 2 / 3 of the oil, there is 7 / 3 kg left in the barrel. How many kg does the barrel weigh
7 / 3-3 / 10 * 2 / 3 = 7 / 3-1 / 5 = 35 / 15-3 / 15 = 32 / 15 barrel weight 32 / 15kg
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