If 1/2 of A = 2/5 of B = 1/3 of C, then A : B : C is equal to?

1/2 of A = 2/5 of B = 1/3 of C
1/2 x A = 2/5 x B = 1/3 x C
Let A/2 = 2B/5 = C/3 = K
Then, A = 2K, B = 5K/2, C = 3K
⇒ A: B : C = 2k : 5k/2 : 3k
∴ A: B : C = 4 : 5 : 6