SOLUTION: Elena bicycles 7 km/h faster than Praedup. In the same time it takes Praedup to bicycle 30 km, Elena can bicycle 51 km. How fast does each bicyclists travel?
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Question 313765: Elena bicycles 7 km/h faster than Praedup. In the same time it takes Praedup to bicycle 30 km, Elena can bicycle 51 km. How fast does each bicyclists travel? Answer by mananth(16946) (Show Source):
You can put this solution on YOUR website! Praedup cycles at x mph.
Elena cycles at x+7 mph.
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distance traveled by Elena is 51 km.
diatance traveled by Praedup = 30 km.
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Time taken by Praedup = 30/x
Time taken by Elena = 51/x+7.
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These two times are same.
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30/x = 51 / x+7
30(x+7)= 51x
30x+210=51x
21x=210
x=10 km/hr. speed of Praedup
Speed of elena = 17 km/hr
