The cost price of 20 books is the same as the selling price of ’X’ books. If the profit is 40%, then the value of X is ?	Choose the correct choice from the following answers
A) 25  B) 18  C) 16  D) 8.9  E) 14
let S.P. of X books = Rs 100 = C.P. of 20 books   Therefore, C.P. of one book = Rs 8   Profit = 40 %   Therefore, S.P of one book = 11.2   S.P of X articles = 11.2 X   11.2 X = 100 =&gt; X = 8.9   ANSWER:8.9
<result>D</result>
The cost price of 20 books is the same as the selling price of ’X’ books. If the profit is 40%, then the value of X is ?