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A store bought 5 dozen lamps at $30 per dozen and sold them all at $15 per lamp.
A store bought 5 dozen lamps at $30 per dozen and sold them all at $15 per lamp.
游客
2024-01-13
39
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问题
A store bought 5 dozen lamps at $30 per dozen and sold them all at $15 per lamp.The profit on each lamp was what percent of its selling price?
选项
A、20%
B、50%
C、
D、100%
E、500%
答案
C
解析
For this problem it is especially important to keep your focus on what is asked and to ignore extraneous details.
The cost per lamp is $30/dozen=$30/12 and the selling price per lamp is $15, so the profit per lamp is $ (15-30/12). Therefore, for each lamp the profit as a percent of the selling price is
The correct answer is C.
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