The present ages of A, B and C are in the ratio 4: 5: 3 . If’ x ‘year hence the age of A to B are in the ratio 5: 6. And ‘y’ years before the ages of B to C were in the ratio 3: 1. If the value of y is 5 more than ‘x’. Find the sum of the present ages of three persons A, B and C.