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1. If 5% is gained by sellign an article for Tk 350 then cost of the article is-
- A. Tk 180
- B. Tk 180
- C. Tk 180
- D. Tk 180
Answer: Option C
Explanation:
Hints: Let cost price of an article x
When SP is 340 Tk, then gain % = 340 - x /x ×100
When SP is increased, if 5% more is gained by selling an article for 350 TK. than by selling if for 340 TK.
Then, [ (350 - x)/x ×100] - [ (340 - x)/x × 100 ] = 5
100/x [ 350 - x - 340 + x ] = 5
100/x [10] = 5
x = 1000/5 = 200 TK.
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