Anonymous
Anonymous asked in Science & MathematicsMathematics · 1 decade ago

how do i figure this out.?

how long would it take to reach 10 miles going 55mph.

how did you do the math

3 Answers

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  • 1 decade ago
    Favorite Answer

    The time, speed, distance relation is as under

    Time = Distance/Speed

    put in the two values you have and you will get the third.

    Distance = 10 miles

    Speed = 55 mph

    Time = D/S = 10/55 hours = 10*60/55 minutes = 10.91 min.approx.

    = 10 min and 55 seconds approx.

    Source(s): primrosh
  • Anonymous
    1 decade ago

    Hi:

    Don't do the first answerer way he set it up wrong. The right way is

    given :

    r= 55mph, d= 10 ,t =?

    slove for t

    r*t= d - speed distance formula

    1/r*r*t= d*1/r - Multiplying the the multiplicative inverse of a variable to both sides of the equation to move it to the other side of it

    t= d/r - Multiplication

    So :

    10/55 = t - Substitution of d and r

    0.18181818181818181818181818181818 hrs = t

    0.181818181818* 60 = 10.909090... minutes or 10 minutes 55 seconds

    Proof:

    r*t= d - speed distance formula

    55* .181818181818..= 10 - Substitution of t,d and r

    9.99999999999999999 miles = 10 miles

    this equals 10 this is one of those division that cannot exactly equal the number but it's close enough to say 10 mile here. Okay.

    it checks and equals

    I hope this helps

  • 1 decade ago

    55=10x

    solve for x

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