Asked by Anonymous
                Peter bought 45 greeting cards at 3 for $2. He sold all of them at 5 for $4. How much money did he make?
            
            
        Answers
                    Answered by
            oobleck
            
    45 = 5*9 = 3*15
so, he made
9*4 - 15*2 = $6
    
so, he made
9*4 - 15*2 = $6
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