If the ratio of a to b is 7 to 3 and the ratio of b to c is 1 to 5, what is the ratio of a to c?
Select the correct option
A) 4/15 B) 1/3 C) 2/5 D) 4/5 E) 7/15
a:b = 7:3 -- 1   b:c = 1:5   =&gt;b:c = 3 :15 --2   From 1 and 2 , we get   a:c = 7:15   Answer 7/15
<result>E</result>
If the ratio of a to b is 7 to 3 and the ratio of b to c is 1 to 5, what is the ratio of a to c?