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Algebraic Techniques, SM-Bank 025

Juan bought 8 identical Christmas presents online for his relatives.

  1. Write an expression for the total price in dollars, if the cost of each present is \($y\).  (1 mark)

  2. When he goes to the checkout Juan discovers that all the presents were reduced in price by $10 each.
     
    i.    Write an expression for the reduced price of one present.  (1 mark)

    ii.   Write an expression for the total reduced price of all 8 presents.  (2 marks)

Show Answers Only

a.    \(8y\)

b.    i.   \(y-10\)

ii.   \(8(y-10)\)

Show Worked Solution

a.    \(\text{Price}=8\times y=8y\)

b.    i.   \(\text{Reduced Price per present}=y-10\)

ii.   \(\text{Total Reduced Price}=8\times (y-10)=8(y-10)\)