07-01-2015
Mathematics

Answered

Smith drives his car and covers 450 miles in 10 hours.

At the same speed, how many hours will it take to cover 540 miles? Plz help

Answer :

07-01-2015

[tex]450\ miles\ in\ 10\ hours\\\\ 540\ miles\ in\ x\ hour\\\\making\ proportion:\\ 450-10\\540-x\\\\cross\ multiplication\\\\ 450=540*10\\\\ 450x=5400\ \ \ \ \ | divide\ by\ 450\\\\ x=12\\\\ It\ will\ take\ 12\ hours.[/tex]

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07-01-2015

450/10=540/x and than do cross multiply, 450x=5400 divide both side by 450 = 12 hours

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