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Un article trouvé pour ce sujet.
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How long will you and your friend be able to talk? |
2010-11-23 |
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beket pose la question :
you and your friend leave your home town at the same time your friend travels by train 45 mph directly east while you travel by train 50 mph going directly south you are talking on cell phone but you plan charges extra if the phones are 100 miles apart. How long will you and your friend be able to talk before the charges increase?
Penny Nom lui répond. |
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