SOLUTION: A salesman drives from Ajax to Barrington, a distance of 133 mi, at a steady speed. He then increases his speed by 14 mi/h to drive the 168 mi from Barrington to Collins. If the se

Question 1107231: A salesman drives from Ajax to Barrington, a distance of 133 mi, at a steady speed. He then increases his speed by 14 mi/h to drive the 168 mi from Barrington to Collins. If the second leg of his trip took 7 min more time than the first leg, how fast was he driving between Ajax and Barrington?
Answer by josgarithmetic(39630) (Show Source): You can put this solution on YOUR website!
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                 SPEED       TIME            DISTANCE

A to B            r          133/r            133

B to C           r+14        168/(r+14)       168

DIFFERENCE                    7/60

Simplify and solve this equation.
-

discriminant,... 17956
discriminant,

(286^2-4*15960=81796-63840=17956)

first part of trip:

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