Asked by GGIFT

Maria bicycles 7 km/h faster than Carlos. In the same time, it takes Carlos to bicycle 42km, Maria can bicycle 63km. How fast does each bicyclist travel?
Answered by Reiny
Carlos' rate ---> x km/h
Maria's rate ---> x+7 km/h

times are the same :
42/x = 63/(x+7)
cross-multiply and solve for x
Answered by GGIFT
so now do I have 63x * 42x + 294?
then subtract 63 from both sides and get -21?
then divide 294 by -21?
Answered by Reiny
You don't have an equation!
After you cross-multiply you get
63x = 42x + 294
21x = 294
x = 14
Answered by GGIFT
gotcha now, i didn't copy the = sign after 63x... thank you very much!!!
Answered by Javier
These answers are wrong they both can't be traveling at the same speed and one person be traveling father. Plug the answer 14 back into the original problem they both equal 3.
There are no AI answers yet. The ability to request AI answers is coming soon!