A shopkeeper purchased one dozen pens for Rs. 108 and sold these at Rs. 12.50 each. find: (i) the cost of one pen. (ii) profit or loss on selling one pen. (iii) his total profit or loss onselling all pens.

A shopkeeper purchased one dozen pens for Rs. 108 and sold these at Rs

1.	A shopkeeper purchased one dozen pens for Rs. 108 and sold these at Rs. 12.50 each. find: (i) the cost of one pen. (ii) profit or loss on selling one pen. (iii) his total profit or loss onselling all pens.
Answer» ANSWER :(i) Rs. 9 (ii) Profit Rs. 3.50 (III) Profit Rs. 42