Question 350071
Speed to granite city = 64 mph
speed to Perryville = 48 mph.
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The ratio of their speeds = 64/48 = 4/3
While going to grainte city if the time is t 
the time to go to perryville itwill take more time = 4t/3 hours.
Both the times when added = 3 1/2 hours =7/2 hours
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t+ (4t/3) = 7/2
(3t+4t) /3 = 7/2
7t/3= 7/2
7t= 3*7/2
t= 3/2 hours
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time taken to go to granite city = 3/2 hours
speed = 64 mph
distance = 64*3/2
distance = 32*3= 96 miles
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Time to go to Perryville = 4t/3 = 4/3*3/2=2 hours
speed = 48 mph
distance = 48 * 2 = 96 miles