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The distance between a and B is 1500 meters. Two people set out from a and B at the same time and meet each other 10 minutes later. If they speed up by 20% and still set out from a and B at the same time, they will meet each other 10 minutes later______ Two seconds meet
The original speed sum of the two: 1500 ／ 10 = 150 (meters), the speed sum after speed increase: 150 × (1 + 20%) = 180 (meters), the average speed sum per second: 180 ／ 60 = 3 (meters), the meeting time: 1500 ／ 3 = 500 (seconds)
The distance between a and B is 1500 meters. Two people set out from a and B at the same time and meet each other 10 minutes later. If they speed up by 20% and still set out from a and B at the same time, they will meet each other 10 minutes later______ Two seconds meet
The original speed sum of the two: 1500 ／ 10 = 150 (meters), the speed sum after speed increase: 150 × (1 + 20%) = 180 (meters), the average speed sum per second: 180 ／ 60 = 3 (meters), the meeting time: 1500 ／ 3 = 500 (seconds)
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