Question

if the ratio of a:b=5:3 and b:c=2:1.then find a:b:c.

Answer 1

a/b = 5/3
and
b/c = 2/1
now lcm of 3 and 2 is 6
a/b = 5x2/3x2 = 10/6
b/c = 2x3/1x3 = 6/3
So
a:b:c = 10:6:3

Answer 2

Hope this helps you;-)