the ratio of the cost price and the selling price is 4: 5. the profit percent is?	Choices
A) 17
B) 56
C) 25
D) 28
E) 12
<gadget id="calculator">5 / 4</gadget>
<output>5/4 = around 1.25</output>

<gadget id="calculator">(5/4) - 1</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">(1/4) * 100</gadget>
<output>25</output>

<result>C</result>
the ratio of the cost price and the selling price is 4: 5. the profit percent is?
multiply(subtract(divide(5, 4), const_1), const_100)
"let c . p . = rs . 4 x . then , s . p . = rs . 5 x gain = ( 5 x - 4 x ) = rs . x gain % = ( x * 100 ) / 4 x = 25 % . answer : c"