David mixed 10 kg of ghee at Rs. 200 per kg with 30 kg ghee at the rate of Rs. 100 per kg. At what price per kg should he sell the mixture to make a profit of 50% in the transaction? Select:  A) Rs. 180.50  B) Rs. 187.50  C) Rs. 107.50  D) Rs. 188.50  E) Rs. 187.00
Cost of Ghee = 10*200+ 30*100 /40 =5000/40= 
<gadget id="calculator">5000/40</gadget>
<output>125</output>
125   50% of 125= 62.50   S.P. should be = 125+62.50= Rs. 187.50/ kg   Answer : Rs. 187.50
<result>B</result>
David mixed 10 kg of ghee at Rs. 200 per kg with 30 kg ghee at the rate of Rs. 100 per kg. At what price per kg should he sell the mixture to make a profit of 50% in the transaction?