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Mathematics, 29.06.2019 06:50 edna27

Two drivers moving in opposite directions on an 18-mile circular racetrack cross each other at a certain point. if one of them has an average speed of 1.2 miles per minute and the other has an average speed of 1.8 miles per minute, how many minutes will it take for them to cross each other again? a. 3 b. 4 c. 6 d. 9 e. 12

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