A pair of articles was bought for Rs. 37.40 at a discount of 15%. What must be the marked price of each of the articles ?
Options:  A) Rs15  B) Rs 20  C) Rs 22  D) Rs 25  E) Rs 26
Solution: As question states that rate was of pair of articles, So rate of One article = 37.40/2 = Rs. 18.70 Let Marked price = Rs X then 85% of X = 18.70 =&gt; X = 1870/85= 
<gadget id="calculator">1870/85</gadget>
<output>22</output>
22   Answer: Rs 22
<result>C</result>
A pair of articles was bought for Rs. 37.40 at a discount of 15%. What must be the marked price of each of the articles ?