Waugh jogged to a restaurant at $x$ miles per hour, and jogged back home along the same route at $y$ miles per hour.

Waugh jogged to a restaurant at $x$ miles per hour, and jogged back home along the same route at $y$ miles per hour. He took $30$ minutes for the whole trip. What is the average speed at which he jogged for the whole trip?

1) The restaurant is $2$ miles from home.
2) $x=2$ and $y=6$

The OA is D

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