Question

A shopkeeper purchases 11 knives in polcell them at the rate of 10 knives for 10 and sells profit of - 11. He earns a
(A) 11 per cent
(B) 15 per cent
(C) 20 per cent
(D) 21 per cent
​

Answer 1

Step-by-step explanation:

Rate of cost price of knives = Rs 10 for 11 knives.

So, Cost Price (CP) for a knives = 10/11 Rs

Rate of selling price of knives = Rs 11 for 10 knives.

So, Selling Price (SP) for a pen = 11/10 Rs

∴Profit=SP−CP= 11/10 − 10/11 = 121−100

-----------

110

= 21/110 Rs

⇒Profit percentage = Profit×100/CP

= 21/110 ×100

--------------------- =21%

10/11

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