If a book is sold at 9% profit instead of 9% loss, it would have brought Rs 9 more. Find out the cost price of the book  Select
A) 75  B) 72  C) 50  D) 70  E) 80
Let C.P. of the book be Rs. ’X’   Given, 1.09 X - 0.91X = 9   =&gt; 0.18 X = 9 = 9/0.18= 
<gadget id="calculator">9/0.18</gadget>
<output>50</output>
Rs 50   ANSWER:50
<result>C</result>
If a book is sold at 9% profit instead of 9% loss, it would have brought Rs 9 more. Find out the cost price of the book