For shopkeeper, the marked price of an article Rs.4000. He sells the same article at a discount of 5% to A. A sells the same article to B. B sells the same article at Rs.7700 without discount and earns 10% of profit percentage. Find the profit percentage earned by A.
1
82.34%
2
88.45%
3
80.48%
4
81.23%
5
84.21%