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On the map of scale 1:3000000, the distance between the two places is 6cm. A and B cars drive from the two places at the same time, and they meet in 4 hours Connect to the top, The speed ratio of car a and car B is 4:5. How many meters does car a and car B walk per hour?
3000000 × 6 = 18000000 (CM), 18000000cm = 180km, 180 ／ (4 + 5) = 20 (km), a: 20 × 4 = 80km, B: 2 × 5 = 100 (km), 80 ／ 4 = 20 (km), 100 ／ 4 = 25 (km)
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A and B start from a and B at the same time and travel in opposite directions. A travels 50 kilometers per hour and B 40 kilometers per hour. A reaches the midpoint one hour earlier than B. how many hours does a reach the midpoint?
40 × 1 ^ (50-40), = 40 ^ 10, = 4 (hours); answer: a reaches the midpoint in 4 hours
The speed of car a is 50 km / h, and that of car B is 40 km / h. when car a drives over 13-50 km from a and B, it meets with car B______ Kilometers
A: the distance between a and B is 225 km, so the answer is: 225
The speed of car a is 50 km / h, and that of car B is 40 km / h. when car a drives over 13-50 km from a and B, it meets with car B______ Kilometers
A: the distance between a and B is 225 km, so the answer is: 225
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