A barrel of oil weighs 16 kilograms, and after half of it is used, the barrel weighs 9 kilograms, an

16-(16-9)x2

16-7x2

2 kg. The barrel weighs 2 dry grams.

Oil is a general term for hydrophobic substances that are liquid at room temperature, composed of one or more liquid hydrocarbons (a large part of silicone oil is composed of silicon-oxygen compounds), and hydrocarbons such as alcohols, ketones and ethers are distinguished by the non-polarization of the components of the oil, and the difference with fats is that the molecular length of the compounds that make up the oil and the connection between the molecules are relatively small.

It is generally divided into: (1) vegetable oil; (2) animal oil; (3) mineral oil; (4) essential oils (essential oils); (5) Silicone oil.

The main component of vegetable oil and animal oil is glycerides of fatty acids, so it is also called fatty oil (fatty oil); It does not volatilize under normal circumstances, so it is sometimes referred to as fixed oil.

According to whether they are edible, they can be divided into edible oils (such as soybean oil, sesame oil, olive oil, peanut oil, sunflower oil, etc.) and non-edible oils (such as tung oil, castor oil, etc.).

Mineral oil is petroleum, shale oil, and their products, the main components of which are hydrocarbons. Most of them are volatile, can be distilled or fractionated, and then processed to obtain gasoline, kerosene, lubricating oil, etc.

Essential oils are actually a special class of vegetable oils, but their main components are terpenes, which have a volatile and aromatic odor and are mainly used in the formulation of fragrances.

A: The remaining oil weighs 2 kg.

Oil. 16-9=7 (kg) 7+7=14 (kg) Answer: The oil weighs 14 kg.

Bucket. 14 7 = 2 (kg) Answer: The barrel weighs 2 kg.

Half the weight of the oil = 10 kg - 6 kg = 4 kg.

The weight of the oil = 4 kg x 2 = 8 kg.

Barrel weight = 10,000 silver grams - 8 kilograms = 2,000 simple ears of banquet grams.

So the barrel weighs 2 kg.

Oil weight: (10-6) 2=8 kg.

Barrel weight: 10-8 = 2 kg.

Oil weight: (15-8) * 2 = 14 (side smile kg).

Weight: 15-14 = 1 (kg).

Answer: The barrel and oil are transported and cultivated with a weight of 1 kg and 14,000 Zen grams respectively.

A barrel of oil with a base barrel weighs 11,000 sedan branches, and after half of it, the barrel weighs 6 kilograms, how many dry grams does this barrel of oil weigh? How many kilograms does a bucket weigh?

Solution: The formula for oil weight is:

11-6)x2

5x210 kVG.

Barrel weight: 11-10 = 1 kg.

A: The oil weighs 10 kg and the barrel weighs 1 kg.

Summary. Hello: dear, half of the oil = 19-11 = 8 kg, barrel weight = 19-8 2 = 3 kg, oil weight = 19-3 = 16 kg. A: This barrel weighs 3 kg and the oil weighs 16 kg.

A barrel of oil weighs 19 kilograms with a barrel, and after half of it is poured out, it weighs 11 kilograms with a barrel, so how many kilograms does this barrel weigh? How many kilograms does oil weigh?

Hello: dear, half of the oil = 19-11 = 8 kg, barrel beam silver weight = 19-8 2 = 3 kg, oil weight = 19-3 = 16 kg. A: This slow-leakage barrel weighs 3 kg and the oil weighs 16 kg. Disturb the slag and rot.

Dear, because it is known that the oil and barrel weigh 19 kilograms, and after pouring out half of the stupid blind land, the oil barrel weighs a total of 11 kilograms, and you can find out that half of the oil is 8 kilograms, the original oil is 16 kilograms, and the weight of the barrel is 19-16 = 3 thousand gods or grams!

Pro, so I can find out that the weight of the oil and barrel is 3 and 16!

Dear, what questions do you have?

The amount of oil loss and slipping:

15-8）x2

7x214 (kg).

The weight of the barrel pin wax is lost:

15-14 = 1 (kg).

Dear, seeing that your noisy sedan chair is a problem, just click in. Dear, this math problem is not very rare, often see similar, the problem said that the total weight at the beginning is 15 kg, after using up half of the oil, there is 8 kg, the 15-8 = 7 kg is half of the oil used, the total closed weight of the oil is 7 2 = 14 kg, and the oil drum weighs 15-14 = 1 kg.