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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?

  • math -

    D=RT
    450=60(8-x)+50x

  • math -

    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

  • math -

    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)?

  • math -

    5 hours

  • math -

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

  • math -

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

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