Quentin drove for 2 hours at one speed and 3 hours at another speed, he covered a distance of 252km. If he had travelled 4 hours at the first speed and 1 hour at the second speed, he would have covered 244km. Find the speeds at which Quentin drove?

You're going to set up 2 equations in 2 unknowns. Remember that distance traveled equals rate times time. So in the first case, he drove 252 Km by driving 2 hours at one speed (call it S1) and 3 hours at another speed (S2), which means the distance traveled is:

Distance = (2 x S1) + (3 x S2) = 252 Km

Now, can you (a) set up the second equation, and (b) solve the two equations for S1 and S2? If you're still having difficulty post back with what you've tried and where you're getting stiuck.