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anonymous

  • 5 years ago

A long distance trucker traveled a 180 miles during a snow storm in one direction. The return trip on a rainy day at double the speed it took 3 hours less. Find the speed going

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  1. anonymous
    • 5 years ago
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    Did you try to figure out how to solve it?

  2. anonymous
    • 5 years ago
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    say the speed going is v. say it too time t to reach the destination while going. express v and t in terms of the distance.

  3. anonymous
    • 5 years ago
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    took* time t

  4. anonymous
    • 5 years ago
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    nikki, we need you to give us some feedback in order to help you.

  5. anonymous
    • 5 years ago
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    yeah, solving your math homework is not the point of Openstudy

  6. anonymous
    • 5 years ago
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    I did try...I ended up with 2 different variables and cannot solve.

  7. anonymous
    • 5 years ago
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    Write down what you got. We can correct you

  8. anonymous
    • 5 years ago
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    I got for the return trip 180=2r(t-3)

  9. anonymous
    • 5 years ago
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    r is the speed and t is time

  10. anonymous
    • 5 years ago
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    right, what is the going trip formula?

  11. anonymous
    • 5 years ago
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    180=r(t+3)

  12. anonymous
    • 5 years ago
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    I do not know the time to figure out the speed

  13. anonymous
    • 5 years ago
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    If im not mistaken the original should be 180 = r* (t)

  14. anonymous
    • 5 years ago
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    ok but how do you figure out the time to get the rate?

  15. anonymous
    • 5 years ago
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    why did you write 180 = r(t+3)? Does the trucker take 6 extra hours on the way to the destination?

  16. anonymous
    • 5 years ago
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    well simplify the second equation

  17. anonymous
    • 5 years ago
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    first define what t is.

  18. anonymous
    • 5 years ago
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    because I added three hours to the time of the return trip

  19. anonymous
    • 5 years ago
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    t is time

  20. anonymous
    • 5 years ago
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    define what t is. what do you mean by t?

  21. anonymous
    • 5 years ago
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    t is time taken to do what?

  22. anonymous
    • 5 years ago
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    the time for the total distance of 180

  23. anonymous
    • 5 years ago
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    time for total distance of 180? what does that mean? how can time be for distance?

  24. anonymous
    • 5 years ago
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    Nikki, t represents the time of the going trip

  25. anonymous
    • 5 years ago
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    What it the time of the going back trip?

  26. anonymous
    • 5 years ago
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    it takes t amount of time to go 180 miles on the going trip, and it takes t-3hours on the return trip. im confused on how to find t because i need t to find r

  27. anonymous
    • 5 years ago
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    I think this is a classic mechanic problem. So you can use the velocity formula (V=d/t)

  28. anonymous
    • 5 years ago
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    right, so it takes t amount of time, going at speed r to reach 180 miles.

  29. anonymous
    • 5 years ago
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    so 180 = t*r

  30. anonymous
    • 5 years ago
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    That is what I am using i learned it as d=rt which the same thing with only the distance in a different spot

  31. anonymous
    • 5 years ago
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    okay while returning, the speed is 2r, and the time take to travel back the same distance reduces by 3 hours. so 180 = 2r(t-3)

  32. anonymous
    • 5 years ago
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    yes i have that. but how do you find the speed from that with another variable

  33. anonymous
    • 5 years ago
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    so, lets call 180 = tr ------------------------- equation 1 180 = 2r(t-3) ------------------------- equation 2. from equation 1 we have t = 180/r, correct?

  34. anonymous
    • 5 years ago
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    yes!!! thank you i got it from here!!! much thanks

  35. anonymous
    • 5 years ago
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    so substitute t = 180/r in equation 2 and post what you got.

  36. anonymous
    • 5 years ago
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    alright, you are welcome.

  37. anonymous
    • 5 years ago
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    30=r

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