Bargain in Guavas
Recently I bought some guavas at New Market for Rs. 1.20.
But they were so small, I made the vendor to part with two extra guavas
for the same price.
As I began to walk away, the vendor mumbled that this transaction
had made him lose 10 paise a dozen less than the price settled before.
How many guavas did I get for Rs. 1.20?