At what price must Kantilal sell a mixture of 80kg. Sugar at Rs.6.75 per kg. with 120 kg. at Rs.8 per kg. to gain 20% ?
Choose the correct choice from the following choices:
A) Rs.7.50 per kg	B) Rs.8.20 per kg	C) Rs.8.85 per kg	D) Rs.9 per kg.	E) None
Explanation:   Total C.P of 200 kg of sugar   = Rs.(80×6.75+120×8)=Rs.1500   C.P of 1 kg = Rs.[1500/200]=Rs.7.50   Gain required = 20%   S.P of 1 kg = (120% of Rs.7.50)   = Rs.[120/100×7.50]=Rs.9 per kg.   Correct Option : Rs.9 per kg.
<result>D</result>
At what price must Kantilal sell a mixture of 80kg. Sugar at Rs.6.75 per kg. with 120 kg. at Rs.8 per kg. to gain 20% ?