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Passenger cars travel 56 kilometers per hour, and the speed of freight cars is 6 / 7 of that of passenger cars. It takes 4 / 3 and 2 hours for freight cars to go from a to B. what is the distance between a and B
The speed of freight cars is 6 / 7 of that of passenger cars
56 * 6 / 7 = 48 km / h
It took four and two thirds of an hour
48 * (14 / 3) = 224km
A passenger car and a freight car leave at the same time. The passenger car is 56 kilometers away from the midpoint. The freight car is 38 kilometers away from the midpoint. The speed ratio of passenger to freight is 3:2. How many kilometers are there
When the bus exceeds 56 km from the midpoint, the truck is 38 km away from the midpoint. The speed ratio of the bus to the truck is 3:2. How many km is the distance between the two places?
Let half the distance be X
(x+56)/3=(x-38)/2
x=226
Distance: 2x = 452
When the bus is 56 km beyond the destination, the truck is 38 km away from the destination. The speed of the bus and truck is known
If the degree ratio is 3:2, what is the distance between a and B?
Speed ratio 3:2
The distance ratio is 3:2
The driving distance of freight car is (56 + 38) x2 △ (3-2) = 94x2 = 188
The distance between a and B is 188 + 38 = 226km
Six hours later, the bus is 12.5% of the distance to B, and the truck is 56 km above the midpoint
It is known that buses travel 15 kilometers more per hour than trucks. How long is the highway between a and B?
The 6-hour passenger car runs 15 × 6 = 90 km more than the freight car
So the bus exceeds the midpoint 56 + 90 = 146 km
1-12.5% = 87.5% of the whole journey in 6 hours
Therefore, the length of the highway between a and B is 146 △ 3 / 8 = 1168 / 3km ≈ 389.33km
Happy New Year!
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