The ratio of age of Priya and Arohi is 9 : 4 . 5 years ago their age was in the ratio of 3 : 1. Find the ratio of sum and difference of present ages of Priya and Arohi ?

13 : 5

Priya present age = 9R

Arohi present age = 4R

Required ratio → ( P + A )  :  ( P - A )

                         (9R + 4R ) : ( 9R - 4R )

                               13R     :     5R

                                13      :     5