SOLUTION: Ralph jogs from his home to the stadium at 10 km/h. His trip home takes exactly one hour less because he takes a car traveling at 60 km/h. How far is it from Ralph’s home to the st
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Question 336345: Ralph jogs from his home to the stadium at 10 km/h. His trip home takes exactly one hour less because he takes a car traveling at 60 km/h. How far is it from Ralph’s home to the stadium? Answer by checkley77(12844) (Show Source):
You can put this solution on YOUR website! D=RT
D=10T FOR THE RUN.
D=60(T-1) FOR THE CAR RIDE.
10T=60(T-1)
10T=60T-60
60T-10T=60
50T=60
T=60/50
T=1.2 HOURS FOR THE RUN.
D=10*1.2=12 MILES FROM HOME TO THE STADIUM.
PROOF:
12=60(1.2-1)
12=60*.2
12=12
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