The stock trades for $31 while a put and call on that stock, having the same strike

Fantastic news! We've Found the answer you've been seeking!

Question:

The stock trades for $31 while a put and call on that stock, having the same strike and time to maturity, trade for $3 and $5 respectively. If the options have one year to maturity and the risk-free rate is 2% what is the strike price on the options?