A manufacturer sells a pair of glasses to a wholesale dealer at a profit of 18%. The wholesaler sells the same to retailer at a profit of 20%. The retailer in turn sells them to a customer for Rs. 30.09, there by earning a profit of 25%. The cost price for the manufacturer is?
Choose the correct choice from the following
A) 19 B) 10 C) 17 D) 18 E) 12
Let the cost price for the manufacturer be Rs. x. Then, 125% of 120% of 118% of x   = 30.09.   125/100 * 120/100 * 118/100 * x   = 3009/100   177/100 x = 3009/100 =&gt; x = 17   Answer:17
<result>C</result>
A manufacturer sells a pair of glasses to a wholesale dealer at a profit of 18%. The wholesaler sells the same to retailer at a profit of 20%. The retailer in turn sells them to a customer for Rs. 30.09, there by earning a profit of 25%. The cost price for the manufacturer is?