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Two race cars,car x an y,are at the starting point of a two km track at the same time.car x and car y make one lap every 60 s and every 80 sec respectively.

How long, in minutes, will it take for the faster car to be 5 laps ahead of the slower car?

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Two race cars,car x an y,are at the starting point of a two km track at the same time-example-1
User Bertone
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