Question

if a:b=5:7and b:c 14:15.find a:c

Answer 1

a:b = 5*2:7*2 = 10:14
b:c = 14:15
Therfore a:c = 10:15 = 2:3

Answer 2

if a:b=5:7 and b:c=14:15
    so a:c=1:3
bcoz a/c=5/15
5/15=1/3