The ratio of the cost price and selling price is 4:5. The profit percent is?
Pick: A) 20% B) 25% C) 30% D) 50% E) 15%
Let the C.P. = $4x   Then S.P. = $5x   Then, Gain = 5x-4x = $x   Gain% = x/4x *100 = 25%   Answer is 25%
<result>B</result>
The ratio of the cost price and selling price is 4:5. The profit percent is?