There is a distance of 300km between a and B. a bus starts from a place, now it runs one third of the total length on the expressway, and then it runs two fifths of the total length on the secondary highway. How many kilometers will it take for the bus to reach B place?

There is a distance of 300km between a and B. a bus starts from a place, now it runs one third of the total length on the expressway, and then it runs two fifths of the total length on the secondary highway. How many kilometers will it take for the bus to reach B place?

Hello!
Still need to drive:
300-300*1/3-300*2/5
=300-100-120
=80KM

The volume of the long-distance bus to the bottom tank is 80L, and the distance between cities a and B is 400km. Answer the following questions
① What is the functional relationship between the total distance x km that a car can travel and the average fuel consumption y (L) per kilometer after the fuel tank is filled
② The average fuel consumption per kilometer from city a to city B is 0.1L. On the return journey, due to the rain, the speed is reduced. At this time, the fuel consumption per kilometer is doubled. If you drive at this speed, can the fuel in the tank return to city a? If it is not enough, at least how much more fuel?

(1)xy=80
y=80/x
(2) 1 * 400 = 40, the remaining 40,
0.2 per km, 0.2 * 400 = 80, not enough, 40 less, plus 40

The distance between a and B is 300km. A bus starts from a place and runs 13% of the total length on the expressway first, then 25% of the total length on a section of highway. Q: how many kilometers will it take for the bus to reach B place?

300 × (1 − 13 − 25) = 300 × 415 = 80 (km) a: it will take 80 km for this car to reach B

A and B start from city a, C start from city B, a and a is 80 / h, B is 90 / h, C is 100 / h. If the three cars are running in opposite directions, C will encounter a collision
When car B meets car a 5 minutes later, find the distance between car a and car B

This is not difficult, simple distance encounter problem, the answer is 285km