The distance between a and B is 2 cm on the map. If the scale of this map is 1:5000000, how many kilometers is the actual distance between a and B? Wang Ning read a story book. On the first day, he read 10% of the whole book. After that, he read 18 pages a day, and then he read six days. How many pages are there in this book? A bucket of liquid medicine was taken out 34 kg for the first time, and 30% for the second time (5 / 12)

The distance between a and B is 2 cm on the map. If the scale of this map is 1:5000000, how many kilometers is the actual distance between a and B? Wang Ning read a story book. On the first day, he read 10% of the whole book. After that, he read 18 pages a day, and then he read six days. How many pages are there in this book? A bucket of liquid medicine was taken out 34 kg for the first time, and 30% for the second time (5 / 12)

(1) 2x5000000 = 10000000 (CM) = 100 (km)
A: the distance is 100 kilometers
（2）1-10%=90%
18x6 △ 90% = 120 pages
A: a total of 120 pages

On the map with a scale of 1:5000000, the distance between the two places is 6cm. After driving from the two places at the same time for three hours, the two cars meet. The speed ratio of car a to car B is 2:3. How many kilometers do car a and car B travel per hour?

The actual distance between the two places: 6 △ 15000000 = 30000000 (CM), 30000000 cm = 300 km, the speed of car a: 300 △ 3 × 22 + 3, = 100 × 25, = 40 (km); the speed of car B: 300 △ 3-40, = 100-40, = 60 (km); a: car a travels 40 km per hour, car B travels 60 km per hour