Question 12227
The numbers are in ration 9:5:2 so assuming that the numbers have a common factor x, the actual numbers become
9x, 5x, 2x
The sum of these 3 is given to be 54 so 9x + 5x + 2x  = 54

Thus 16x = 54

Therefore x = 3.375
Thus numbers would be
9x3.375, 5x3.375 & 2x3.375
(You can multiply further)