Sir Edwyn is a brave knight on a quest to save the fair Isabella from a wicked baron. It is of utmost importance that he arrive at the baron’s castle at exactly the correct time. He has calculated that if he rides his bicycle at 10 mph he will arrive one hour too late; but if he rides at 15 mph he will arrive one hour too early. How far does he have to ride?
+36916 rate * time = distance
distance / rate = time
The distance Edwyn must ride his steel horse is a constant.
d/10 = (x +1) d = 10(x+1)
d/15 = (x-1) d = 15(x-1) equate the d's
15(x-1) = 10(x+1)
5x = 25
x = 5 hours d = 10 ( x+1) = 60 miles
