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If I purchased 11 books for Rs. 10 and s...

If I purchased 11 books for Rs. 10 and sold all the books at the rate of 10 books for Rs. 11, the profit per cent is-

A

11 `%`

B

21 `%`

C

25`%`

D

28`%`

Text Solution

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The correct Answer is:
B
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