A shopkeeper bought an article for Rs. 2000 and marked it 60% above its cost price and sold it after giving two successive discounts of Rs. 12a and (a - 20)% respectively and earned overall profit of (11a/50)%, if cost price and selling price of article B is Rs. (12a + 80) and Rs. 992,respectively, then find the profit/loss earned on selling article B ?
1
220%
2
99(1/9)%
3
77(1/7)%
4
70%
5
33(1/3)%