Find the ratio in which rice at Rs.7.10 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) None of these
Solution   Required ratio = 60 : 80 = 3 : 4   Answer 3 : 4
<result>C</result>
Find the ratio in which rice at Rs.7.10 a kg be mixed with rice at Rs.5.70 a kg to produce a mixture worth Rs.6.30 a kg?