The ratio of the cost price and the selling price is 4:5. The profit percent is:	Choose the correct option:
A) 22%	B) 31%	C) 25%	D) 30%	E) 29%
C   25%   Let C.P. = $ 4x. Then, S.P. = $ 5x   Gain = (5x - 4x) = $ x   Gain % = (x * 100)/ 4x = 25%.
<result>C</result>
The ratio of the cost price and the selling price is 4:5. The profit percent is: