The ratio between the sale price and the cost price of an article is 9:7. What is the ratio between the profit and the cost price of that article?  Choose the correct answer.
A) 2:9  B) 2:7  C) 3:6  D) 2:0  E) 2:1
Let C.P. = Rs. 7x and S.P. = Rs. 9x.   Then, Gain = Rs. 2x   Required ratio = 2x : 7x = 2:7   Answer:2:7
<result>B</result>
The ratio between the sale price and the cost price of an article is 9:7. What is the ratio between the profit and the cost price of that article?