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 answer
A) 1 : 3 B) 2 : 3 C) 3 : 4 D) 4 : 5 E) 5 : 2
Explanation:   By the rule of alligation:   Required ratio = 60 : 90 = 2 : 3.   ANSWER IS 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.