Once I had been to the post office to buy five-rupee, two-rupee and one-rupee stamps. I paid the clerk Rs. 20, and since he had no change, he gave me three more one-rupee stamps. If the number of stamps of each type that I had ordered initially was more than one, what was the total number of stamps that I bought?
Option (a)
The number of stamps that were initially bought were more than one of each type. Hence the total number of stamps
2(5 rupees) + 2(2 rupees) + 3(1 rupee) + 3(1 rupee) = 10 tickets