Nitrous oxide (laughing gas) worth Rs 126 per kg and Rs 135 per kg are mixed with a third variety in the ratio 1 : 1 : 2. If the mixture is worth Rs 153 per kg, then the price of the third variety per kg will be  Choose the correct option:	A) Rs 169.50	B) Rs 170	C) Rs 175.50	D) Rs 180	E) Rs 190
Suppose the quantities of Nitrous oxide worth Rs 126 per kg, Rs 135 per kg and Rs.x per kg purchased are Y, Y and 2Y kg respectively:   (126 Y +135 Y + 2XY )/ 4Y = 153   =&gt; 261 + 2X = 612   =&gt; X= 351/2= 
<gadget id="calculator">351/2</gadget>
<output>351/2 = around 175.5</output>
175.50   Nitrous oxide of the third varity is purchased at the rate of Rs 175.50 per Kg   ANSWER:Rs 175.50
<result>C</result>
Nitrous oxide (laughing gas) worth Rs 126 per kg and Rs 135 per kg are mixed with a third variety in the ratio 1 : 1 : 2. If the mixture is worth Rs 153 per kg, then the price of the third variety per kg will be