A man purchases 8 pens for Rs.9 and sells 9 pens for Rs.8, how much profit or loss does he make?	Options
A) 30.98%loss B) 20.98%loss C) 20.97%loss D) 20.68%loss E) 20.98%loss
81 ---- 17   100 ----- ? è   20.98%loss   Answer: 20.98%loss
<result>B</result>
A man purchases 8 pens for Rs.9 and sells 9 pens for Rs.8, how much profit or loss does he make?