Question

3. If I purchased 11 books for Rs. 10 and sold all the books at the rate of 10 books for Rs. 11, the profit percent
is :
(A) 10%
(B) 11%
(C) 21%
(D) 100%
00
2007​

Answer 1

Answer:

1oo

Step-by-step explanation:

=10/11 and sale per book is 11/ 10,so % profit is =((11/10)-(10/11))*100/(10/11 )=(121–100)*100*11/(10*(110))=21*

Answer 2

Answer:

Cost price = Rs.s10

Cost price = Rs.s10Selling price = Rs.11

Cost price = Rs.s10Selling price = Rs.11Gain = Rs. 121/10−10=Rs.21/10

10Gain % = 21/10×10×100 = 21%

Answer is c 21%