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Car a and car B start from a and B at the same time and travel in opposite directions. Car a travels 80 kilometers per hour and car B 70 kilometers per hour. When car a reaches 25 o'clock of the whole journey, car B is 36 kilometers away from the midpoint. How many kilometers is the distance between a and B?
Suppose the distance between a and B is x km. & nbsp; & nbsp; 25X △ 80 = (12x-36) △ 70 & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; X200 = X140 − 3670x140 − X200 = 1835 & nbsp; & nbsp; & nbsp; 3x1400 = 1835 & nbsp; & nbsp; 3x × 35 = 1400 × 18105x △ 105 = 2520
A and B start from a and B at the same time and travel in opposite directions. A travels 80 kilometers per hour, and B travels 10% of the whole journey per hour. When B reaches 58, a reaches B at 16 of the whole journey. How many kilometers are there between a and B?
The speed ratio of a and B is: (1-16): 58 = 56:58 = 4:3; therefore, the speed of B car per hour is: 80 △ 4 × 3 = 20 × 3 = 60 (km); the distance between AB and a: 60 △ 10% = 60 △ 0.1 = 600 (km); a: the distance between a and B is 600 km
A and B start from a and B at the same time and travel in opposite directions. A travels 80 kilometers per hour, and B travels 10% of the whole journey per hour. When B reaches 58, a reaches B at 16 of the whole journey. How many kilometers are there between a and B?
The speed ratio of a and B is: (1-16): 58 = 56:58 = 4:3; therefore, the speed of B car per hour is: 80 △ 4 × 3 = 20 × 3 = 60 (km); the distance between AB and a: 60 △ 10% = 60 △ 0.1 = 600 (km); a: the distance between a and B is 600 km
A and B start from a and B at the same time and run in opposite directions. A travels 80 kilometers per hour and B 65 kilometers per hour. When they meet, they are 30 kilometers away from the midpoint. How many kilometers are there between a and B?
When they met, they were 30 kilometers away from the midpoint, so a was 30 * 2 = 60 kilometers more than B
The meeting time is 60 / (80-65) = 4 hours
A. B the distance between the two places is (80 + 65) * 4 = 580km
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