SOLUTION: A car travels 300 km at a certain speed. If the speed had been increased by 10 km/h, the trip could have been made in 1 hour or less time. Find the actual speed. s = d/t s =

Algebra ->  Quadratic Equations and Parabolas  -> Quadratic Equations Lessons  -> Quadratic Equation Lesson -> SOLUTION: A car travels 300 km at a certain speed. If the speed had been increased by 10 km/h, the trip could have been made in 1 hour or less time. Find the actual speed. s = d/t s =      Log On


   

Question 416352: A car travels 300 km at a certain speed. If the speed had been increased by 10 km/h, the trip could have been made in 1 hour or less time. Find the actual speed.
s = d/t
s = 300/60 = 50 what about the 10 increase
Answer by josmiceli(19441) About Me  (Show Source):
You can put this solution on YOUR website!
Let s = speed without the 10 km/hr increase
(1) +300+=+s%2At+
And with the increase in speed:
(2) 300+=+%28s+%2B+10%29%2A1
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This is 2 equations and 2 unknowns, so it's solvable
(2) +300+=+s+%2B+10+
(2) +s+=+290+
The actual speed is 290 km/hr