It is known that the speed ratio of a and B is 2:3. A starts 15 minutes earlier than B and meets each other after 1 hour and 45 minutes

It is known that the speed ratio of a and B is 2:3. A starts 15 minutes earlier than B and meets each other after 1 hour and 45 minutes

If the velocity of a is x, then the velocity of B is 3 / 2x = 1.5x,
After 1 hour and 45 minutes, a's journey is 1.75 * x = 1.75x (1 hour and 45 minutes equals 1.75 hours),
B's journey is 1.5 * 1.5x = 2.25x (1 hour and 30 minutes equals 1.5 hours)
25x-1.75x = 6, x = 12km / h
So the speed of a is 12km / h, the speed of B is 12 * 1.5 = 18km / h, and the distance between AB is 1.75 * 12 + 1.5 * 18 = 21 + 27 = 48km

The speed ratio of a and B is known to be 2:3. A starts 15 minutes earlier than B and meets each other after 1 hour and 45 minutes
The speed ratio of a and B is 2: a starts 15 minutes earlier than B. after 1 hour and 45 minutes, a meets B. at this time, a walks 6 kilometers less than B. how about the speed of a and B and the distance between ab? To solve a linear equation with one variable

Suppose the velocity of a is x (M / min) and that of B is y (M / min)
X：Y=2:3
105X+6=90Y
We get x = 200, y = 300
A. B the distance between the two places is 48000 meters

Party A and Party B are walking towards each other at the same time. The speed of Party A is 20 kilometers per hour, and that of Party B is 18 kilometers per hour. When they meet, the distance between the two places is 3 kilometers

Suppose the distance between the two places is x km, [3 + (x / 2)] / 20 = [(x / 2) - 3] / 18, then x = 114 km

Party A and Party B ride from both places at the same time. Party A travels 20 kilometers per hour, and Party B travels 18 kilometers per hour. When they meet, the distance between them is 3 kilometers from the midpoint of the whole journey. How long is the whole journey? (draw a picture first, then answer)

3 × 2 (20-18) = 6 △ 2 = 3 (hours); (20 + 18) × 3 = 38 × 3 = 114 (kilometers); answer: the whole journey is 114 kilometers long