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Alicia bought diaries at $3 each and sold them at $8 each. Customers who bought 2 diaries from her were given one diary free. At the end of the sale, Alicia had given away 150 copies of diaries and made $1 235. Find the number of customers who had bought only one diary.

 
 Sep 13, 2021
 #1
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If she gave away 150, that means there were 150 sets of 3

    150 *16 = 150*16 = 2400   - 450*3  = 1050         (450 *3 is the cost of goods sold)

 

1235- 1050 = 185     at   5 profit each = 37 single copy buyers

 
 Sep 13, 2021

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