Correct Answer: 15 : 10 : 6
Explanation:
Let 1/x = 2K, 1/y = 3K and 1/z = 5K Then, x = K/2, Y = K/3 and z = K/5 ∴ x : y : z = K/2 : K/3 : K/4 = 1/2 : 1/3 : 1/5 = 15 : 10 : 6