A barrel of oil weighs 20 kg. When it is poured out of 13, it weighs 14 kg______ Kilogram

A barrel of oil weighs 20 kg. When it is poured out of 13, it weighs 14 kg______ Kilogram

20 - (20-14) △ 13 = 20-6 △ 13 = 20-18 = 2 (kg); answer: the barrel weighs 2kg

A barrel of oil weighs 20 kg. When it is poured out of 13, it weighs 14 kg______ Kilogram

20 - (20-14) △ 13 = 20-6 △ 13 = 20-18 = 2 (kg); answer: the barrel weighs 2kg

A barrel of oil, if you pour out a quarter of the oil, the remaining barrel weighs 19 kg, if you pour out a third of the oil,
A barrel of oil, if you pour out a quarter of the oil, the remaining barrel weighs 19 kg. If you pour out a third of the oil, the remaining barrel weighs 17 kg, how much does the barrel weigh?
It's oil. No barrels

What about the question?
Oil: (19 - data you didn't give) / (1-3-1 / 4) = 24
^-^

A barrel of oil, such as one fourth of the oil poured out, weighs 19 kg, one third of the oil poured in, weighs 17 kg?

Weight of oil:
(19-17) / (1 / 3-1 / 4) = 24 (kg);
Weight of barrel:
19-24 * (1-1 / 4) = 1 (kg)
24 + 1 = 25 (kg)
This barrel of oil weighs 25 kilos