By selling 12 toffees for a rupee, a man loses 20%. How many for a rupee should be sell to get a gain of 20%? Choose the correct choice from the following answers:  A) 5  B) 8  C) 10  D) 15  E) 20
Explanation:   Let S.P. of 12 toffees be Rs. x.   Then, 80:1 = 120:x or x = 120/180 = 3/2   For Rs. 3/2, toffees sold = 12.   For Re. 1, toffees sold = 12 * 2/3= 
<gadget id="calculator">12 * 2/3</gadget>
<output>8</output>
8   ANSWER IS 8
<result>B</result>
By selling 12 toffees for a rupee, a man loses 20%. How many for a rupee should be sell to get a gain of 20%?