By selling a book for 270, 20% profit was earned. What is the cost price of the book?  Choose the correct choice
A) 215	B) 225	C) 230	D) 235	E) 240
SP = 120% of CP; :. CP = 270 × 100/120 = 225   Option '225'
<result>B</result>
By selling a book for 270, 20% profit was earned. What is the cost price of the book?