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Thread: Requesting More Math Help [I really should just make my own board Ed.]

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    Requesting More Math Help [I really should just make my own board Ed.]

    So I've got EQAO tomorrow (yay) ((not))

    Been going through the practice booklet~

    Alfredo and his wife, Jody, work in a
    restaurant.
    Last week Alfredo received an average of
    $15 in tips for each of the 55 tables he
    served. Jody received an average of $20 in
    tips for each of the 60 tables she served.
    They are planning a weekend trip. Alfredo
    will pay a total of $220 for their hotel room
    and Jody will pay a total of $160 for their
    rental car.
    How much of their combined tips will be
    left over after they have paid for their hotel
    room and rental car?

    a $1620
    b $1645
    c $2025
    d $2405

    Help? D:

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    (55*15)+(60*20)-380 = 1645
    ==because $15 average for each 55 table he served==
    ==$20 average for each 60 tables===
    == minus 380(which is total they spent= 1645 left over

    B.

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    Mint (01-16-2013)

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    Oh okay, thanks @babytroop123456 !

    I have another:

    Juan belongs to a CD club that sells CDs for $11.44 each before tax. His first shipment of CDs costs
    $90.49 including 13% tax.
    How many CDs are in his first shipment?

    I got 7.
    Last edited by Mint; 01-16-2013 at 04:53 PM.

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    Quote Originally Posted by Mint View Post
    Can you explain what you did? I don't really understand the question :c
    edited my post, so theres an explanation

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    Edited my post as well xD

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    90.49= 11.44(x)+(.13)(11)(x)

    you can do the algebra

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    Mint (01-16-2013)

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    Quote Originally Posted by Mint View Post
    Oh okay, thanks @babytroop123456 !

    I have another:

    Juan belongs to a CD club that sells CDs for $11.44 each before tax. His first shipment of CDs costs
    $90.49 including 13% tax.
    How many CDs are in his first shipment?

    I got 7.
    11.44x + .13(11.44x) = 90.49
    its 7. So you're right. THe equation is above^

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    Here's what I have on my paper.

    $11.44- before tax, each CD.

    90.49(0.13)
    = $11.76 <-- tax

    90.49-11.76
    = $78.73

    $78.73/$11.44
    = around 7 CDs

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    Quote Originally Posted by Mint View Post
    Here's what I have on my paper.

    $11.44- before tax, each CD.

    90.49(0.13)
    = $11.76 <-- tax

    90.49-11.76
    = $78.73

    $78.73/$11.44
    = around 7 CDs
    That also works, but solving it alagabbraeicly would result in the equations me and graff posted

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    Alright, understood! Thanks @Graff @babytroop123456 ~

    Here's another one:

    A box with a volume of 12x^y^2 is
    shown below. (height 2y & length 2x)

    What is the width of the box?

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