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Mathematics > Standard Multiple Choice

A woman drove to work at an average speed of miles per hour and returned along the same route at miles per hour. If her total traveling time was hour, what was the total number of miles in the round trip?

Want a hint?

If represents the time it took the woman to drive to work, then, since her total traveling time was hour, the time it took her to return would be . Each distance (going and returning) can be expressed using . The distance going to work must be the same as the distance returning, so the two expressions for distance can be set equal to each other.

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