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Math Help - I'm having a hard time solving problems on speed and time and need help?

  1. #1
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    Smile I'm having a hard time solving problems on speed and time and need help?

    Hello,

    I'm new in town! I'm about to start an online undergrad program getting my BA. I still have trouble with math and it is my worst subject. I did fine with Algebra but everything else are cruel to me. I need help on how to figure out this problem: A train travels 20 feet in 1/5 second. At this same
    speed, how many feet will it travel in three seconds?

    Thank you for anyone who can help walk me in solving this.
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  2. #2
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    Re: I'm having a hard time solving problems on speed and time and need help?

    A train travels 20 feet in 1/5 second
    ... then it would travel 100 ft in 1 whole second, wouldn't it?
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  3. #3
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    Re: I'm having a hard time solving problems on speed and time and need help?

    Yeah, 20 feet in 1/5 sec, 100 feet in 1 sec, 300 feet in 3 sec.
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  4. #4
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    Re: I'm having a hard time solving problems on speed and time and need help?

    Quote Originally Posted by Notatroll View Post
    Yeah, 20 feet in 1/5 sec, 100 feet in 1 sec, 300 feet in 3 sec.
    gee, thanks for giving the OP the opportunity to think about this problem by himself ...
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  5. #5
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    Re: I'm having a hard time solving problems on speed and time and need help?

    For speed/time/distance problems, remember that  Speed = \frac{Distance}{Time}

    You're given that the train traveled 20 feet in 1/5 seconds. So you can plug it in the speed formula to get the speed of the train.

    Now you want to know how far it will travel in 3 seconds. You can rearrange the original formula so that you have Distance = Time * Speed.

    Now you can plug in 3 and the speed you got from the original formula to find the distance the train travels in 3 seconds.
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