SOLUTION: two cyclists start from the same point and ride in opposite directions. One cyclist rides twice as fast as the other. In 3 h, they are 81 mi apart. Find the rate of each cyclist
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Question 209248: two cyclists start from the same point and ride in opposite directions. One cyclist rides twice as fast as the other. In 3 h, they are 81 mi apart. Find the rate of each cyclist. Answer by nerdybill(7384) (Show Source):
You can put this solution on YOUR website! two cyclists start from the same point and ride in opposite directions. One cyclist rides twice as fast as the other. In 3 h, they are 81 mi apart. Find the rate of each cyclist.
.
You will be applying the distance formula:
d = rt
where
d is distance
r is rate or speed
t is time
.
Let x = speed of slower cyclist
then
2x = speed of faster cyclist
.
3(x + 2x) = 81
(x + 2x) = 27
3X = 27
X = 9 mph (slower cyclist)
.
faster cyclist:
2x = 2(9) = 18 mph (faster cyclist)
