A sample gas is 3.7 L at 15.3 degrees C and the pressure is held at constant. What would be the volume if the temp was raised to 153 degrees C?

Since PV/T remains constant, and in this case P remains constant, that means that

V/T does not change

3.7/288.45 = V/426.15

solve for V

Odd that they chose an exact tenfold increase in °C when you have to use °K. Maybe to catch the unwary.