Algebra Demystified 2nd Ed

(Marvins-Underground-K-12) #1
Chapter 2 IntroduCtIon to VarIables 59

deMYstiFied / algebra deMYstiFied / HuttenMuller / 000-0 / Chapter 2


  1. Nikki has $8000 in her bank, some in a checking account, some in a
    certificate of deposit (CD).
    Amount in checking account = __.
    Amount in CD = __.

  2. A total of 450 tickets were sold, some adult tickets, some children’s
    tickets.
    Number of adult tickets sold = __.
    Number of children’s tickets sold = __.

  3. A boutique is selling a sweater for three-fourths off retail.
    Regular selling price = __.
    Sale price = __.

  4. A string is cut into three pieces of unequal length. The shortest piece
    is 51 as long as the longest piece. The mid-length piece is 21 the length of
    the longest piece.
    Length of the longest piece (in the given units) = __.
    Length of the shortest piece (in the given units) = __.
    Length of the middle piece (in the given units) = __.


SOLUTIONS


  1. Marie’s age = x.
    Tony’s age = x + 3.

  2. Mona’s height (in the given unit of measure) = x.
    Sandie’s height (in the given unit of measure) =^34 x.

  3. Number of hours Lisa takes to compute her taxes = x.
    Number of hours Sam takes to compute his taxes = x + 2.

  4. Net income = x.
    Amount spent on rent =^35 x.

  5. Width (in the given unit of measure) = x.
    Length (in the given unit of measure) = 4x.

  6. Amount paid in federal income taxes = x.
    Amount paid in state income taxes = 5000 − x.
    (Or x = amount paid in state income taxes and 5000 − x = amount paid
    in federal taxes).

  7. Amount in checking account = x.
    Amount in CD = 8000 − x.
    (Or x = amount in CD and 8000 − x = amount in checking account)


SOLUTIONS


  1. Marie’s age =


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