A trader wants 10% profit on the selling price of a product whereas his expenses amount to 15% on sales. What should his rate of mark up be on an article of Rs. 9?
Choose the correct choice from the following:
A) 20%
B) 25%
C) 30%
D) (100/3) %
E) none
Let S.P. = Rs X   Therefore, expenses = 15% of X = 0.15 X   Profit = 10% of X = 0.10X   C.P. = Rs 9 (Given)   Therefore, 9 + 0.15X + 0.1X = X =&gt; X = 12   Markup % = 3/9 x 100 = 100/3 %   Therefore, the rate of mark up on the article should be 100/3 %   ANSWER:(100/3) %
<result>D</result>
A trader wants 10% profit on the selling price of a product whereas his expenses amount to 15% on sales. What should his rate of mark up be on an article of Rs. 9?