C types 600 words 5 mins faster than K types 600 words....

I having a problem wrapping my brain around this one, can someone help?

Connie can type 600 words in 5 minutes less than it takes Katie to type 600 words. If Connie Types at a rate of 20 words per minute faster than Katie types, find the typing rate of each woman.

Re: Word Problem

let t = time in minutes it takes katie to type 600 words
then (t-5) = time it takes for connie to type 600 words

let r = rate that katie types in words per minute
then (r+20) = rate that connie types in words per minute

rate * time = number of words typed

set up two equations, one for kate and one for connie using the above relationship ... this will give you a system of two equations with two unknowns (r and t) that you should be able to solve.