math
posted by Cecilia .
Ronald made a trip of 450 miles in 8 hours. Before noon he avg. 60 miles per hour, and after noon he avg. 50 miles per hour. At what time did he begin his trip and when did it end?

D=RT
450=60(8x)+50x 
Thank you so much for the equation  can u explain why we minus the 8 by x. I know it's the amount of time, can u clarify... thanks again

If I told you Ronald traveled 3 hours after noon, how long did he traveled before noon (given he traveled both before and after noon in 8 hours)?

5 hours

That is why it is 8x. Do you understand?

yes i do now  thank you again  i can go to sleep now!! bye thanks