Posted by karen on Friday, November 21, 2008 at 4:23pm.
Kathy bicycles 5km/h faster than Javier. In the same time it takes Javier to bicycle 49km, Kathy can bicycle 63 km. How fast does each bicyclist travel?

college algebra  drwls, Friday, November 21, 2008 at 4:32pm
Vk = Vj + 5
Vk/Vj = 63/49 = 9/7

Vj = (7/9)Vk
Vk = (7/9)Vk + 5
(2/9)Vk = 5
Vk = 22.5 km/h
Vj = 17.5 km/h

college algebra  Tammy, Sunday, February 20, 2011 at 2:41pm
Kathy bicycles 8 km/h faster than Chris. In the same time it takes Chris to bicycle 57 km, Kathy can bicycle 81 km. How fast does bicylist go?
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