pv = nRT
Assuming v, n, R are constant:
P/Po = T/To
p= T/To/Po
P = (50+273) / (70+273)*(14.7+13.5)= 26.6 psia
PSIG = (26.6-14.7) = 11.9
All the balls were ‘deflated’.
one ball was left inflated just in case they were caught...
that’s how you know they were cheating.