Solution
A : B = 3 : 5 ---(1) and B : C = 2 : 3 ---(2)
To find the A : B :C, we will equal the common term so,
equation (1) multiply by 2 and equation (2) multiply by 5,
A : B = 6 ; 10
B : C = 10 : 15
A : B : C = 6 : 10 : 15
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