On a 1:2000000 map On the map with a scale of 1:2000000, the distance between a and B is 36cm. If the car travels at the speed of 30km / h from a to B, how many hours can it arrive? - -,

On a 1:2000000 map On the map with a scale of 1:2000000, the distance between a and B is 36cm. If the car travels at the speed of 30km / h from a to B, how many hours can it arrive? - -,

The scale is 1:2000000, so one centimeter of the map is equal to the actual 20km
The distance on the map a and B is 36cm, which is actually 36 * 20km = 72km
Driving at a speed of 30 km for 72 km
72 / 30 = 2.4 hours
Attachment: the so-called 1:2000000 scale refers to the fact that one centimeter on the map represents the actual 2000000cm. It is easy to know that 2000000cm is equal to 20km
It seems that the owner of the building doesn't understand the unit on the scale very well!

One corner is a cube, the refrigerator is full of water, put this box of water into another 8 cm long, 25 cm wide cuboid water tank, then how many decimeters of water depth!
A cube refrigerator with an edge angle of 4 decimeters is full of water. Pour this box of water into another cuboid tank with a length of 8 cm and a width of 25 cm. How many decimeters is the water depth! Write carefully, I can't understand

I told you so!
Four times four times four is volume!
4 times 4 times 4 divided by 0.8 times 2.5 is different!
The result is 32

Three primary school sixth grade math problems. Online and so on ~ ~ urgent ah
1. Team a and team B work together to build a 125 kilometer long road. Team a builds 4 kilometers a day. After two days of repair, team B joins in and 13 days of joint repair. How many meters does team B build every day? (these three problems are solved by equations!)
2. Six (1) squadron's tree planting team goes to plant trees. If each person plants 5 trees, there are still 14 saplings left. If each person plants 7 trees, there are 6 saplings left. How many people are there in this team? How many saplings are there in total? (equation ~)
3. Celebrity hotels have the same number of steamed dumplings and steamed dumplings. Every two steamed dumplings and five steamed dumplings form a breakfast. After several steamed dumplings, there are 54 steamed dumplings. How many breakfast have been served? How many steamed dumplings and steamed dumplings have been served? (equation!)
It's really urgent. The homework to be handed in tomorrow! Please help and speed up! 3Q~~

1. Let B repair x meters every day. According to the equation of "distance of repair a + distance of repair B = total distance", 4 × (2 + 13) + 13X = 125, 60 + 13X = 125, 13X = 125-60, 13X = 65, x = 5. Let B repair 5 kilometers every day

1. In a subtraction formula, the sum of the subtracted, the subtracted and the difference is exactly 150, and the subtracted is ()
2. A barrel of oil weighs 20.5 kg. After half use, the barrel weighs 11 kg. How much oil is there in the barrel?
3. There are 100t grain in warehouse A and warehouse B. If warehouse a transports 8t grain and warehouse B transports 1 / 5 grain, the grain in the two warehouses will be equal. How many tons of original grain in warehouse A and warehouse B?

1. In a subtraction formula, the sum of the subtracted, the subtracted and the difference is exactly 150, and the subtracted is (75). 2. 2. A barrel of oil weighs 20.5 kg. After half use, the barrel weighs 11 kg, and there is (19) kg of oil in the barrel. Suppose the oil has x kg. 0.5x = 20.5-110.5x = 9.5x = 193