Come and teach me math The charging standard of natural gas for residents in a city is as follows: each household uses less than 4 cubic meters of gas per month, which is 1.8 yuan per cubic meter. When it exceeds 4 cubic meters, the excess part is 3 yuan per cubic meter. In a month, a and B pay 28.8 yuan in total, and the ratio of gas consumption is 5:3. A and B pay 32.4 yuan in total. Q: how much should a and B pay? The charging standard of natural gas for residents in a city is as follows: 1.8 yuan per cubic meter for each household whose gas consumption is less than 4 cubic meters per month, and 3 yuan per cubic meter for the excess part when the gas consumption is more than 4 cubic meters. The gas consumption ratio of a and B households in a month is 5:32.4 yuan. Q: how much should a and B pay?

Come and teach me math The charging standard of natural gas for residents in a city is as follows: each household uses less than 4 cubic meters of gas per month, which is 1.8 yuan per cubic meter. When it exceeds 4 cubic meters, the excess part is 3 yuan per cubic meter. In a month, a and B pay 28.8 yuan in total, and the ratio of gas consumption is 5:3. A and B pay 32.4 yuan in total. Q: how much should a and B pay? The charging standard of natural gas for residents in a city is as follows: 1.8 yuan per cubic meter for each household whose gas consumption is less than 4 cubic meters per month, and 3 yuan per cubic meter for the excess part when the gas consumption is more than 4 cubic meters. The gas consumption ratio of a and B households in a month is 5:32.4 yuan. Q: how much should a and B pay?

How to pay together

1: There are two bags of rice. The first bag is 1.5 times of the second bag. Take 12kg from the first bag and give it to the second bag. The two bags are the same weight. How much is the second bag? (use the equation solution) Note: there are two ways to solve this problem. 2. Put 52 liters of oil into a cuboid container. The oil is 2 mm high and only 10 DM deep. Note: there are two ways to solve this problem

1. Solution: suppose B has x kg, then a has 1.5x kg. 1.5x-12 = x + 121.5x-x = 12 + 120.5x = 24x = 24 △ 0.5x = 481.5 × 48 = 72kg. Answer: A has 72 kg, B has 48 kg. Solution: suppose two bags of the same weight each have x kg, then a has x + 12 kg, B has X-12 kg

At present, there is a square block of wood with a volume of 125 square meters. Because of the need to saw it into eight small cube blocks of the same size, the surface area of each small cube block is calculated

The volume of the cube is 125 / 8 cubic meters
So the side length of the small cube is 5 / 2m
Surface area: 6x2.5x2.5 = 37.5m2