The actual distance between Beijing and Tianjin is 120km. (1) the distance between Beijing and Tianjin is 1.5cm measured on this map, and the scale of this map is calculated. (2) the scale of this map is expressed by line segment scale

The actual distance between Beijing and Tianjin is 120km. (1) the distance between Beijing and Tianjin is 1.5cm measured on this map, and the scale of this map is calculated. (2) the scale of this map is expressed by line segment scale

(1) Because 120 km = 12000000 cm, 1.5 cm: 12000000 cm = 1:8000000; a: the scale of this map is 1:8000000. (2) because 8000000 cm = 80 km, the scale of the line is: so the answer is:

On the map of scale 1:5000000, the distance between the two places is 2.5cm, and it takes 0.5hours for a train to complete the whole journey

Actual distance
=2.5×5000000÷100000
=125 km
Train speed
=125÷0.5
=250 km / h