If a:b=3:4, b:c=7:9, c:d=5:7, d:e=12:5, Then a:e=A1:2B2:1C2:3D1:1Answer: D. 1:1 Read Explanation: (a/b)*(b/c)*(c/d)*(d/e)=a/e (3/4)*(7/9)*(5/7)*(12/5)=a/e 1=a/e ie a:e=1:1Read more in App