The cost of type 1 rice is Rs 15 per Kg and type 2 rice
is Rs 20 per Kg. If both type1 and type 2 are mixed in the
ratio of 2:3,then the price per Kg of the mixed variety
of rice is?	Choices.
A) 15	B) 18	C) 20	D) 25	E) 30
Let the price of the mixed variety be Rs x per Kg.   Cost of 1 Kg of type 1 rice Rs 15 Cost of 1 Kg of type 2 rice Rs 20   Mean Price Rs x   20-x x-15   (20-x) /( x-15) = 2/3   =&gt; 60-3x = 2x-30   5x = 90=&gt;x=18.   ANSWER 18
<result>B</result>
The cost of type 1 rice is Rs 15 per Kg and type 2 rice
is Rs 20 per Kg. If both type1 and type 2 are mixed in the
ratio of 2:3,then the price per Kg of the mixed variety
of rice is?