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Math Help - ....ookaieeeeee

  1. #1
    Member
    Joined
    Dec 2007
    Posts
    98

    ....ookaieeeeee

    I just worked out a problem that gave me and answer of 1 but when checked with the correct answer it was 1.2......Here is the problem

    Erin can paint a room in 3hrs and her hubby can do it in 2hrs, how long will it take both to paint the room together?! (simplified the question)

    Ok! so knowing that

    Erin=3x and Hubby=2x the problem then is written like this....(right?)

    1x over 3 plus 1x over 2 equals 1

    1x
    + 1x = 1
    3.....2

    ok now the LCD is 6 and then multiply all by (6)

    (6) 1x + (6) 1x = 1(6)
    3..........2

    cancel the 6 and the 3 = 2 and the 6 and the 2 = 3 right!?

    so now we have

    2x + 3x = 6 combine like terms;

    6x = 6

    and then solve for
    x

    x=1

    so far so good or did I dushbag it somewhere?!

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  2. #2
    Junior Member
    Joined
    May 2007
    Posts
    60
    Adding mistake! lol
    you said:
    "2x + 3x = 6 combine like terms;
    6x = 6"

    !!!!!!!!!!!!!!!!!!!!!

    its meant to be
    5x = 6
    x = 1.2

    lol
    so for the most part youwere correct just remember to recheck your calculation
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  3. #3
    Member
    Joined
    Dec 2007
    Posts
    98
    .......



    Always.....always


    Thanks for that, believe me! I would have had figure out such a mistake by tomorrow morning !!!

    Uuufffff! my brain seems to be at the brink of a mathematical overdose LOL

    Thanks again!
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