If a=2b, 3b=4c, 5c=6d, what is the ratio of a to d?
The answer given in the book is: 16/5
The answer I got is 5/16.
This is how I got my answer, can you tell me where I went wrong?
a=2b
3b=4c
5c=6d
3a=6b=8c
15a=30b=40c=80d
15a=80d
5a=16d
THEREFORE: the ratio of a to do is 5/16