Tea worth Rs. 126 per kg and Rs. 135 per kg are mixed with a third variety of tea in the ratio 1 : 1 : 2. If the mixture is worth Rs. 153 per kg, what is the price of the third variety per kg ?  Choose the correct choice: A) Rs.182.50 B) Rs.170.5 C) Rs.175.50 D) Rs.180 E) Rs.190
Explanation:   Tea worth Rs. 126 per kg and Rs. 135 per kg are mixed in the ratio 1 : 1   So their average price   =(126 + 135)/2= 
<gadget id="calculator">(126 + 135)/2</gadget>
<output>261/2 = around 130.5</output>
130.5   Hence let's consider that the mixture is formed by mixing two varieties of tea, one at Rs. 130.50 per kg and the other at Rs. x per kg in the ratio 2 : 2, i.e., 1 : 1. Now let's find out x   By rule of alligation,   (xâˆ’153):22.5=1:1   â‡’xâˆ’153=22.50   â‡’x=153+22.5= 
<gadget id="calculator">153+22.5</gadget>
<output>175.5</output>
175.5   Answer IS Rs.175.50
<result>C</result>
Tea worth Rs. 126 per kg and Rs. 135 per kg are mixed with a third variety of tea in the ratio 1 : 1 : 2. If the mixture is worth Rs. 153 per kg, what is the price of the third variety per kg ?