need some tips on an assignment...

i posted this on the wrong thread so i'll post it here...hehehe sorry

okay i need to solve this for our class... but i don't want the answer (even if i badly need it hehehe ) i need tips and hints so i can answer it... i'm really bad at word probs so all your help will be appreciated much!!!

In a long distance race covering 42km. one runner finished 12 min before another runner. If the faster runner's rate was 1km/hr more than the slower runner's, what were their rates?...

thank a bunch!

[Sillysidley]

Let x be the slower guy's speed. Then,
.
Solve it

okay... tried it but uhhh you lost me with 1/5..where did you get that?...

[Sillysidley]

Well, since we're talking about hours, and 12 min. is of an hour...

awww shucks..now i feel so ******!.. hehehe thanks.. i'll try it now...

do i still need to use the quadratic formula with this?....

Yes because .