Find the ratio in which rice at Rs. 7.20 a kg be mixed with rice at Rs. 5.70 a kg to produce a mixture worth Rs. 6.30 a kg.	Choose the correct choice from the following options:  A) 1 : 3.  B) 2 : 3.  C) 2 : 4  D) 1 : 4  E) 3 : 3.
Cost of 1 kg of 1st kind=720 p   Cost of 1 kg of 2nd kind=570 p   Mean Price=630 p   Cost of 1 kg of 1st kind - Mean Price=720-630= 
<gadget id="calculator">720-630</gadget>
<output>90</output>
90   Cost of 1 kg of 2nd kind- Mean Price=570-630=60   Required ratio = 60 : 90 = 2 : 3.   Answer:2 : 3.
<result>B</result>
Find the ratio in which rice at Rs. 7.20 a kg be mixed with rice at Rs. 5.70 a kg to produce a mixture worth Rs. 6.30 a kg.