Two containers of milk contain mixtures of water and milk in ratio 5:4 and 7:9. In what ratio they should be mixed so that mixture is of 6:6 ratio?  Select
A) 6:5
B) 7:5
C) 9:8
D) 8:9
E) 8:7
6/6-5/4==&gt;-1/4   7/9-6/6==&gt;-2/9   now, -1/4=-2/9==&gt;1/4=2/9==&gt;9:8   ANSWER:9:8
<result>C</result>
Two containers of milk contain mixtures of water and milk in ratio 5:4 and 7:9. In what ratio they should be mixed so that mixture is of 6:6 ratio?