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Question 883607: On a 255-mile trip, Gary traveled at an average speed of 70 miles per hour, got a
speeding ticket, and then averaged 60 mph for the remainder of the trip. If he arrived at his destination 4.5 hours after leaving home, and the speeding ticket stop took 30 minutes, how long did Gary speed before getting stopped?
Answer by lwsshak3(11628)   (Show Source):
You can put this solution on YOUR website! On a 255-mile trip, Gary traveled at an average speed of 70 miles per hour, got a
speeding ticket, and then averaged 60 mph for the remainder of the trip. If he arrived at his destination 4.5 hours after leaving home, and the speeding ticket stop took 30 minutes, how long did Gary speed before getting stopped?
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let x=distance Gary traveled at 70 mph
255-x=remaining distance Gary traveled at 60 mph
Gary's travel time=x/70
total travel time=distance/speed=4.5 hr-30 min=4 hrs
lcd:70*60
60x+70(255-x)=4*70*60
60x+17850-70x=16800
10x=1050
x=105
x/70=105/70=1.5
how long did Gary speed before getting stopped? 1.5 hr
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