Question 826343
Aloha! 


Let's take Priscilla's age as n and Jack's age as n + 9. Then, we'll equate it to the 163 years


n + n + 9 = 163
2n = 163 - 9
2n = 154
{{{(2n)/(2)}}} = {{{(154)/(2)}}}
n = 77 years old


Priscilla = n
= 77 years old


Jack = n + 9
= 77 + 9 years old
= 86 years old

All the best :) x