Temperature change in solid after gas cools 50°C

[39643]

Homework Statement

2.0 moles of a monatomic gas interacts thermally with 2.0 moles of an elemental solid. The gas pressure decreases by 50 degrees C at constant volume. What is the temperature change in the solid?


I missed this day in class and I have no idea where to even begin...

 

[sjb-2812]

The question doesn't seem to make sense, as pressure is not measured in units of temperature, unless I am missing something?

 

[haruspex]

It probably says or intends 50%, not 50^oC.