By selling 45 lemons for Rs 40, a man loses 20 %. How many should he sell for Rs 24 to gain 20 % in the transaction ?  Pick one.
A) 16  B) 18  C) 20  D) 22  E) 25
Explanation:   Let S.P. of 45 lemons be Rs. x.   Then, 80 : 40 = 120 : x or x =40X120/80=60   For Rs.60, lemons sold = 45   For Rs.24, lemons sold =45/60X24=18.   ANSWER IS 18
<result>B</result>
By selling 45 lemons for Rs 40, a man loses 20 %. How many should he sell for Rs 24 to gain 20 % in the transaction ?