Find the unit cost for a DVD, and then multiply that my the amount of DVDs to be bought.
1 DVD = $28.00/2 = $14.00 Per DVD.
So 5 DVDs would be 5*$14.00, which is $70.00.
ANONYMOUS
Nata spent $28.00 on 2 DVDs. At this rate now much would she spent on 5 DVDs cost?
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