A bookstore sells magazines for $5 each and novels for $15 each. A customer purchases a total of 13 items and spends $165. How many magazines did the customer buy?
A. 3
B. 4
C. 2
D. 5
Answer:
A
Explanation:
Let x represent the number of magazines purchased. The remaining (13 - x) items are novels. The total cost equation is 5x + 15(13 - x) = 165. Simplify the equation: 5x + 195 - 15x = 165, which becomes -10x + 195 = 165. Subtract 195 from both sides to get -10x = -30, and then divide by -10 to find x = 3. Therefore, the customer bought 3 magazines.
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