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Math Help - Word Problem for Algebra.

  1. #16
    Super Member 11rdc11's Avatar
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    Quote Originally Posted by BrilliantLegacy View Post
    Do you mind telling me the the answer for the first one? I want to make sure I have it right.
    at 8 percent it is 26500 and at 6 percent it 19500
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  2. #17
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    Quote Originally Posted by 11rdc11 View Post
    I got a different answer. Speeds are 75 and 105. The passenger should be faster

    x=y-30 or x+30=y
    nope i just checked it again and im correct

    x is passenger
    y is freight
    if u didnt know by the way
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  3. #18
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    Quote Originally Posted by 11rdc11 View Post
    at 8 percent it is 26500 and at 6 percent it 19500
    ya u are correct i just got that answer then found out u posted b4 me cause i was doin something else
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  4. #19
    Super Member 11rdc11's Avatar
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    Quote Originally Posted by saar4ever View Post
    nope i just checked it again and im correct

    x is passenger
    y is freight
    if u didnt know by the way
    Try it again. If you let y = freight then your equation should be
    60(y+30)= 100(x)
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  5. #20
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    Quote Originally Posted by 11rdc11 View Post
    <b>.08(x+7000)</b> + .0 6(x) = 3290
    Care to explain why you set it up like that?
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  6. #21
    Super Member 11rdc11's Avatar
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    60(x)= 100(x+30)

    60x = 100x + 3000

    -3000 = -40x

    x = 75
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  7. #22
    Super Member 11rdc11's Avatar
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    Quote Originally Posted by BrilliantLegacy View Post
    Care to explain why you set it up like that?
    What part do you need me to explain?
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  8. #23
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    Quote Originally Posted by 11rdc11 View Post
    What part do you need me to explain?
    Actually it would be nice if you go over the WHOLE thing. Pretty please!!
    I've been sitting here for about an hour now trying to solve why I got the wrong answer.
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  9. #24
    Super Member 11rdc11's Avatar
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    ok so x represents amout invested at 6 percent , (x+7000) represent s amounr invested at 8 percent so

    .08(X+7000) +.06(x) =3290

    .08x + 560 + .06x = 3290

    .14x = 2730

    x = 19500

    which means at 6 percent 19500 was invested, and for 8 percent (19500 +7000)=26500
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  10. #25
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    Quote Originally Posted by 11rdc11 View Post
    ok so x represents amout invested at 6 percent , (x+7000) represent s amounr invested at 8 percent so

    .08(X+7000) +.06(x) =3290

    .08x + 560 + .06x = 3290

    .14x = 2730

    x = 19500

    which means at 6 percent 19500 was invested, and for 8 percent (19500 +7000)=26500
    Ohhhh. I see!!!!!!! I thought .08 and .06 are different variables.
    Can I ask you another question? How do you manage to set up those equations like that? I've been learning these stuff for few days now and I still have trouble setting them up as an equation.
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  11. #26
    Super Member 11rdc11's Avatar
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    Quote Originally Posted by BrilliantLegacy View Post
    Ohhhh. I see!!!!!!! I thought .08 and .06 are different variables.
    Can I ask you another question? How do you manage to set up those equations like that? I've been learning these stuff for few days now and I still have trouble setting them up as an equation.
    You can work it using 2 different variables but not sure if you have learned that yet. Word problems just take practice
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