A man purchases 8 pens for Rs.9 and sells 9 pens for Rs.8, how much profit or loss does he make?
A. 20.98% profit
B. 20.98% loss
C. 20.89% profit
D. 20.89% loss
A man purchases 8 pens for Rs.9 and sells 9 pens for Rs.8, how much profit or loss does he make?