A bookseller sold a book for Rs. 40.00 to make a profit of 15% percent. In order to earn a profit of 20%, he should have sold it for?

Answer: 41.74
Explanation

Selling price (SP) = Rs. 40.00

Profit percentage = 15%

Cost price (CP) = SP / (1 + 15/100)

= 40 / 1.15

= Rs. 34.78

To earn a 20% profit:

New selling price (SP) = CP * (1 + 20/100)

= 34.78 * 1.20

= Rs. 41.74

The correct answer is 41.74.

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