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17-12-2014
Mathematics

Answered

River C is 100 miles longer than River D. If the sum of their lengths is 5,560 miles, what is the length of each river?

Answer :

18-12-2014

[tex]x-\ length\ of\ river\ D\\\\ x+100-\ length\ of\ river\ C\\\\ x+x+100=5560\\\\ 2x+100=5560\ \ \ | subtract\ 100\\\\ 2x=5460\ \ \ | divide\ by\ 2\\\\ x=2730miles\\\\ 2730+100=2830miles\\\\ River\ C\ is\ 2830\ miles\ long\ and \ river\ D\ is\ 2730\ miles\ long.[/tex]

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