The C.P of 15 books is equal to the S.P of 18 books. Find his gain% or loss%?	Answers
A) 16 2/3% loss
B) 16 2/8% loss
C) 16 3/3% loss
D) 36 2/3% loss
E) 56 2/3% loss
15 CP = 18 SP   18 --- 3 CP loss   100 --- ? =&gt; 16 2/3% loss   16 2/3% lossnswer:16 2/3% loss
<result>A</result>
The C.P of 15 books is equal to the S.P of 18 books. Find his gain% or loss%?