SOLUTION: Gracies average driving speed is 14 kilometors per hour faster than Kirks. in the same length of time it takes Gracie to drive 320 kilometors, Kirk drives only 264 kilometors, what
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Question 905944: Gracies average driving speed is 14 kilometors per hour faster than Kirks. in the same length of time it takes Gracie to drive 320 kilometors, Kirk drives only 264 kilometors, what is Gracies average speed? Answer by ewatrrr(24785) (Show Source):
You can put this solution on YOUR website! r the Kirk's speed | Cross Multiplying to solve
320r = 264r + 14*264
r = 14*264/56 = 66mph, Kirk's speed. Grace traveling at 80mph
And ...checking
4hr = 4hr
