The ratio between the sale price and the cost price of an article is 8:5. What is the ratio between the profit and the cost price of that article?  Choose the correct choice from the following answers
A) 23 B) 1 : 2 C) 2 : 5 D) 3 : 5 E) 25

Rationale: "c . p . = rs . 5 x and s . p . = rs . 8 x . then , gain = rs . 3 x required ratio = 3 x : 5 x = 3 : 5 d"
Answer: D