SOLUTION: A car is driven 3 hours at a certain speed, and then the speed is increased by 10 miles per hour for the next 2 hours. If the total distance is 250 miles, what are the two rates?

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Question 840534: A car is driven 3 hours at a certain speed, and then the speed is increased by
10 miles per hour for the next 2 hours. If the total distance is 250 miles, what
are the two rates?
Answer by richwmiller(17219) About Me  (Show Source):
You can put this solution on YOUR website!
3x+2*(x+10)=250
3x+2x+20=250
5x=230
x=46
x+10=56
check
3*46+2*56=250
138+112=250
ok