The weights of one liter vegetable ghee packet of two brands ‘A’ and ‘B’ are 900 gm and 700 gm respectively. If they are mixed in the ratio of 3 : 2 by volumes to form a mixture of 4 liters, what is the weight (in kg) of the mixture?
Options:	A) 3.84	B) 1.75	C) 3.28	D) 2.72	E) None of these
Here's how I did it. My notes from reading the problem were:   1L A = 900 gm   1L B = 700 gm   We are mixing five parts (3 parts A plus 2 parts B, 5 parts total) to get 4L, so 5x = 4 ---&gt; x = 4/5. Each part is 4/5 of a liter.   So if we have 3 parts A, we have 900*3*(4/5)= 
<gadget id="calculator">900*3*(4/5)</gadget>
<output>2_160</output>
2160   If we have 2 parts B, we have 700*2*(4/5)= 
<gadget id="calculator">700*2*(4/5)</gadget>
<output>1_120</output>
1120   2160 + 1120= 
<gadget id="calculator">2160 + 1120</gadget>
<output>3_280</output>
3280   Solving for units gives us 3.28   So the answer is 3.28
<result>C</result>
The weights of one liter vegetable ghee packet of two brands ‘A’ and ‘B’ are 900 gm and 700 gm respectively. If they are mixed in the ratio of 3 : 2 by volumes to form a mixture of 4 liters, what is the weight (in kg) of the mixture?