There is a bucket of salad oil in the non-staple food shop. The bucket weighs 56 kg with the same oil. After half of it is poured out, even the bucket weighs 29 kg. How many kg of oil are there in the bucket?

56-29=27
27 * 2 = 54 kg
A: there used to be 54 kilograms of oil in the barrel

A barrel of alcohol weighs 104 kg. Seven fourths of it was used for the first time, and 56 kg was used,
How many kilos is this barrel of alcohol? How many kilos does it weigh?

Heavy alcohol
56 △ 4 / 7 = 98 kg
Empty barrel weight
104-98 = 6 kg
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