The gauge pressure in your car tires is 240 x 105 nm2 at a

Question

Problem: The gauge pressure in your car tires is 2.40 x 10⁵ N/m² at a temperature of 35.0°C when you drive it onto a ferry boat to Alaska.

1- What is their gauge pressure later, when their temperature has dropped to -39.0°C?

Show me the each step in detail and assume that their volume has not changed.