Answer with Explanation:

Let A = 2k, B = 3k and C = 5k.

A's new salary = 115 /100 of 2k = (115 /100 x 2k) = 23k/10 

B's new salary = 110 /100 of 3k = (110 /100 x 3k) = 33k/10 

C's new salary = 120 /100 of 5k = (120 /100 x 5k) = 6k 

Therefore, New ratio (23k/10 : 33k/10 : 6k ) = 23 : 33 : 60