• # question_answer The ratio in which a man must mix rice at Rs. 10.20 per kg and  Rs. 14.40 per kg so as to make a mixture worth  Rs. 12.60 per kg, is A)  3 : 4                 B)  4 : 3 C)  2 : 5                 D)  18 : 24

[a] By the rule of alligation: Cost of 1 kg rice of 1 st kind Cost of 1 kg rice of 2nd kind $\therefore$ Required ratio = $1.80:2.40=3\,:\,4$