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Question
If 5% more is gained by selling an article for Tk.350 than by selling it for Tk.340, the cost of the article is-
Tk.50
Tk.160
Tk.200
Tk.225
ANSWER : 3
Descrption
<p>Hints: Let cost price of an article x</p> <p>When SP is 340 Tk, then gain % = 340 - x /x ×100</p> <p>When SP is increased, if 5% more is gained by selling an article for 350 TK. than by selling if for 340 TK.</p> <p>Then, [ (350 - x)/x ×100] - [ (340 - x)/x × 100 ] = 5</p> <p> 100/x [ 350 - x - 340 + x ] = 5</p> <p> 100/x [10] = 5</p> <p>x = 1000/5 = 200 TK.</p>
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