Question 135541
Mr. Taylor travels 600 miles from pittsburgh to chicago at a certain average speed. If the return trip takes 2 hours less time, what is his average speed from pittsburgh to chicago



SOMETHING IS MISSING FROM THIS PROBLEM.  PLEASE RECHECK. THE WAY IT'S STATED, THERE'S MANY SOLUTIONS.  BELOW ARE TWO:

Distance(d) equals Rate(r) times Time(t) or d=rt;  r=d/t and t=d/r

Now lets say Mr. Taylor drove at the rate of 100 mph going to Chicago, then his time would be 600/100 or 6 hrs.  By the same token, if he drove back at 150 mph his time back would be 600/150 or 4 hours---two hours less

Now if he drove to Chicago at the rate of 50 mph his time would be 600/50 or 12 hours and if he drove back at the rate of 60 mph, he would make it in 10 hours----two hours less


ETC, ETC

Hope this helps---ptaylor