Question

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

Answer 1

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

doing 'b ' same in both ratios,,so that we can compare
we will make b as 12
multiply a:b x4,,,. and b:c x3

a: b. 8:12
b:c. 12:15


hence a:b:c. 8:12:15