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Posted by **M.A.** on Wednesday, August 25, 2010 at 7:18am.

100 miles

200 miles

300 miles

400 miles

Explain your answer.

- math word problem -
**MathMate**, Wednesday, August 25, 2010 at 7:31amImplicit in the question is geography:

All three cities lie on the Interstate highway I-95, with Boston in the north, and Richmond (Va) in the south.

Whole trip (Richmond to Boston) took 13 hours, so total distance = 13*50=650 miles

Richmond to Philadelphia=70mph*5 hours=350 miles.

What is the distance between Philadelphia and Boston?

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