Question 222137
21,23,24, and 31 years old,
(21+23+24+31+x)/5=25
(99+x)/5=25
99+x=5*25
x=125-99
x=26 years is the age of the fifth player.
Proof:
(21+23+24+31+26)/5=25
125/5=25
125=5*25
125=125