SOLUTION: Bob, driving a new Ford, travels 330 miles in the same amount of time it takes John, driving an old Chevy and traveling 10 miles per hour faster, to travel 390 miles. How fast is J

Algebra ->  Algebra  -> Customizable Word Problem Solvers  -> Travel -> SOLUTION: Bob, driving a new Ford, travels 330 miles in the same amount of time it takes John, driving an old Chevy and traveling 10 miles per hour faster, to travel 390 miles. How fast is J      Log On

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Question 241087: Bob, driving a new Ford, travels 330 miles in the same amount of time it takes John, driving an old Chevy and traveling 10 miles per hour faster, to travel 390 miles. How fast is John driving?
Answer by nyc_function(2645) About Me  (Show Source):
You can put this solution on YOUR website!
The total distance is 330 + 390 = 720 miles
x^2 + x(x + 10) = 720
Can you solve for x now?