In a certain store, the profit is 320% of the cost. If the cost increases by 25% but the selling price remains constant, approximately what percentage of the selling price is the profit?  Choose one
A) 50
B) 40
C) 70
D) 80
E) 30
C   70%   Let C.P. = $100. Then, profit = $320, S.P. = $420   New C.P. = 125% of $100 = $125.   New S.P. = $420   Profit = 420 - 125= 
<gadget id="calculator">420 - 125</gadget>
<output>295</output>
$295   Required percentage= 295/420 * 100 = 1475/21 = 70%
<result>C</result>
In a certain store, the profit is 320% of the cost. If the cost increases by 25% but the selling price remains constant, approximately what percentage of the selling price is the profit?