The ratio between the sale price and the cost price of an article is 6:4. What is the ratio between the profit and the cost price of that article?	Answers
A) 23	B) 1 : 2	C) 2 : 5	D) 3 : 5	E) 25

Rationale: "c . p . = rs . 4 x and s . p . = rs . 6 x . then , gain = rs . 2 x required ratio = 2 x : 4 x = 1 : 2 b"
Answer: B