Question

A shopkeeper purchases 11 pens for Rs. 10 and sells them at the rate of 10 for Rs. 11, then the profit is

• A. 18%
• B. 19%
• C. 20%
• D. 21%

Answer 1

The correct option is D 21%

$\because$Cost Price of 11 Pen=Rs.10

and S.p of 10 pen=Rs.11

$\therefore$S.P of 11 pen=$\frac{11}{10}\times 11=Rs.\frac{121}{10}$

Profit$=\frac{121}{10}-10=\frac{21}{10}$

Profit %=$\frac{121}{10}\times \frac{1}{10}\times 100=21$%