If 5% more is gained by selling an article for Rs. 350 than by selling it for Rs. 345, the cost of the article is  Choose the most appropriate option:
A) 289  B) 231  C) 100  D) 288  E) 111
Explanation:   Let C.P. be Rs. x.   Then, 5% of x = 350 - 345= 
<gadget id="calculator">350 - 345</gadget>
<output>5</output>
5   x/20= 5 =&gt; x = 100   Answer: 100
<result>C</result>
If 5% more is gained by selling an article for Rs. 350 than by selling it for Rs. 345, the cost of the article is