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.  Options.
A) 2:7	B) 2:3	C) 2:0	D) 2:1	E) 2:2
Explanation:   2:3y the rule of alligation:   Cost of 1 kg rice of 1st kind Cost of 1 kg rice of 2nd kind   {\color{2:3lue} \therefore } Required ratio = 60 : 90 = 2 : 3   Answer: 2:3) 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.