Question

If A:B=2:3and B:C=4:5,then C:A =

Answer 1

A/B = 2/3....(i)

B/C = 4/5.....(ii)

make B equal in both

multiply (i) by 4 and (ii) by 3

then

A:B = 8:12

B:C = 12:15

Now B is equal in both

so

A:C = 8:15