Find the forward price (F) of a forward contract on buying one share of stock (S) where the delivery date is t = 1, given: S(0) = $25 and S(1) has the following probability distribution:

S(1) = $30 with probability p

S(1) = $20 with probability 1 - p

for 0 < p < 1

No risk-free interest rate is given.