Question

If a:b=2:3,b:c=4:5,then find a:b:c

Answer 1

a:b=2:3
b:c=4:5

a:b:c=(2*4):(3*4):(3*5)
=8:12:15

Answer 2

Given a:b = 2:3 =2*4:3*4=8:12

b :c = 4:5=4*3:5*3 =12:15

Now in both ratios b Is 12 of the whole.

Hence combine all.

a:b:c=8: 12:15