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A runner's times (in minutes ) in three races are 6.9, 6.6, and 6.5. The runner will run two more races and wants the average

A runner's times (in minutes ) in three races are 6.9, 6.6, and 6.5. The runner will run two more races and wants the average time of all five races to be less than 6.8 minutes. Describe the average time needed in the two races to achieve this goal.

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