Question Statement :

Rotomac produces very fine quality writing pens. The company knows that on an average, 10% of the pens produced are always defective and thus are rejected before packing. The company promises to deliver 7200 pens to its wholesalers at  Rs.10 each. It estimates the overall profit on all manufactured pens to be 25%. What is the manufacturing cost of each pen in INR?

Type in your answer up to two decimal places. For example, if your answer is 17.566, type 17.57