A train runs 60 kilometers in 3 / 4 hours. At this speed, it takes 3 hours for the train to go from place a to place B. the distance between the two places is several thousand meters

A train runs 60 kilometers in 3 / 4 hours. At this speed, it takes 3 hours for the train to go from place a to place B. the distance between the two places is several thousand meters

Method 1: vehicle speed = 60 △ 3 / 4 = 80 (km / h)
Distance = speed × time = 80 × 3 = 240 (km) method 2: set the speed as X km / h,
That is, three quarters of x equals 60, then x equals 80 km / h
Distance between a and B: 80 times 3 = 240 meters

How many hours will it take for a truck to complete the whole journey at this speed?

3 △ 3 / 5 = 5 hours
5-3 = 2 hours
A: it will take another two hours

From the first place to the second place, the freight cars complete the whole journey in 8 hours at the speed of 56 km / h. The speed of the passenger cars is 25% faster than that of the freight cars, and the passenger cars complete the whole journey in several hours

Distance from land a to land B = 56 × 8 = 448 (km)
Bus speed = 56 × (1 + 25%) = 70 (km / h)
The time for the bus to complete the whole journey = 448 △ 70 = 6.4 (hours)