The cost price of 20 books is the same as the selling price of ’X’ books. If the profit is 50%, then the value of X is ?  Choose the correct choice from the following answers
A) 25	B) 18	C) 16	D) 15	E) 6.7
let S.P. of X books = Rs 100 = C.P. of 20 books   Therefore, C.P. of one book = Rs 10   Profit = 50 %   Therefore, S.P of one book = 15   S.P of X articles = 15 X   15 X = 100 =&gt; X = 6.7   ANSW6.7R:6.7
<result>E</result>
The cost price of 20 books is the same as the selling price of ’X’ books. If the profit is 50%, then the value of X is ?