On a map with a scale of 1:500000, the distance between a and B is 5cm. On a map with a scale of 1:200000, the distance between a and B is 5cm

On a map with a scale of 1:500000, the distance between a and B is 5cm. On a map with a scale of 1:200000, the distance between a and B is 5cm

Actual distance: 5 * 500000 = 2500000cm
Distance: 2500000 / 200000 = 12.5cm

On a map with a scale of 1:2000000, the distance between a and B is 8 cm. How many kilometers is the actual distance between a and B?
If the distance between a and B measured on another map is 10 cm, what is the scale of the other map?

160 km 1:1600000

On the map of scale 1:6000000, the distance on the map is 10cm
The speed ratio of a and B is 11:9. When the two cars meet, how many kilometers does a car travel
The speed of car a and car B is faster than that of the previous six hours

On a 1:6000000 scale map, the distance on the map is 10 cm, and the actual distance is 60 km
The speed ratio of a and B is 11:9,
A car runs 60 * 11 / (11 + 9) = 33 km

On the map with a scale of 1:6000000, the distance between the two places is 5cm. The two cars run from each other at the same time, and they meet three hours later. It is known that the speed ratio of the two cars is 2:3. How many kilometers is the speed of the two cars?

5 △ 16000000 = 30000000 (CM) = 300 (km), 300 △ 3 = 100 (km), 100 × 22 + 3 = 40 (km), 100-40 = 60 (km); a: the speed of car a is 40 km / h, and that of car B is 60 km / h