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A and B leave each other, 15 kilometers away from the midpoint, and they meet. It is known that B has traveled three fifths of the whole journey. How many kilometers is the total length of this highway?
Hello:
15÷（3/5-1/2）
=15÷1/10
=150 (km)
A: the total length of this highway is 150 kilometers
The two vehicles leave each other from two places and meet at a distance of 15 kilometers from the midpoint. It is known that vehicle B has traveled 5 / 2 of the whole journey. How many kilometers is the total length of the highway?
Speed ratio: A: B = 3:2
5 copies in the whole course. Midpoint: 5 △ 2 = 2.5 copies
Each: 15 (2.5-2) = 30 (km)
Whole journey: 30x5 = 150 (km)
The two cars left each other from a and B, and they met at a distance of 30 kilometers from the destination. It is known that when they met, a car traveled three fifths of the whole journey
Is to seek the distance between a and B!
30 / (3 / 5-1 / 2) = 30 / (1 / 10) = 300 km. The corresponding fraction of 30 km is 1 / 10, so we know what fraction of a number is 30, and we can use division to find the number
A: the distance between a and B is 300 kilometers
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