In what ratio should a variety of Rice costing Rs. 10 per kg be mixed with another variety of Rice costing Rs. 13.25 per kg to obtain a mixture costing Rs. 10.75 per kg?
Choose the correct answer
A) 2 :1 B) 1 :2 C) 5 :1 D) 4 :1 E) 3:1
Let us say the ratio of the quantities of cheaper and dearer varieties = x : y   By the rule of allegation, x/y = (13.25 - 10.75) / (10.75 - 10) = 6/3= 
<gadget id="calculator">6/3</gadget>
<output>2</output>
2/1   2 :1NSWER:2 :1
<result>A</result>
In what ratio should a variety of Rice costing Rs. 10 per kg be mixed with another variety of Rice costing Rs. 13.25 per kg to obtain a mixture costing Rs. 10.75 per kg?