A shopkeeper mixed 7kg of salt worth Rs.6 per kg, 5kg of salt worth Rs.4 per kg and 6 kg of salt worth Rs.5 per kg. For what amount of money should he sell 4 kg of the mixed variety of salt in order to make a profit of 12½%?	Choose the correct choice from the following answers
A) 22.95  B) 23.95  C) 24.95  D) 25.95  E) 26.95
7kg*Rs6---- Rs 42   5 kg*Rs4---- Rs 20   6kg*Rs5---- Rs 30   18kg for Rs--92 cost price of 1 kg=92/18=&gt;Rs5.11111   cost of 4 kg ---- 4*5.11111=Rs 20.4444   Profit=12.5%   SP={(100+Gain%)/100}*CP   ={(100+25/2)/100}*20.444   =22.95   22.95NSWER:22.95
<result>A</result>
A shopkeeper mixed 7kg of salt worth Rs.6 per kg, 5kg of salt worth Rs.4 per kg and 6 kg of salt worth Rs.5 per kg. For what amount of money should he sell 4 kg of the mixed variety of salt in order to make a profit of 12½%?