How many of the following transactions are profitable?
i) Two tables bought for Rs.30,500 and sold each at Rs.15,500.
ii) Three fans bought for Rs.12,500 and sold each at Rs.4,300.
iii) Three shirts bought for Rs.450 each and sold at Rs.1,430.
iv) Two computers bought for Rs.15,200 each and sold at Rs.38,500.
v) A pair of denims bought for Rs.1,000 and sold at Rs.850.
vi) Two mobiles bought for Rs.49,000 and sold each at Rs.25,300.