Astronomy HW help (atmospheric pressure related)?

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Shad0wguy

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The highest temperature ever recorded on the Earth’s surface was 43.3◦ C, and the coldest was −89◦ C. If the pressure on the Earth’s surface stays almost constant, by what percentage did the density of gas in the atmosphere change between those extremes? Hint: pressure is directly proportional to density times temperature. Temperature must be measured in absolute terms with a true zero, like degrees K.

I'm completely lost on this one. I'd appreciate any help I can get.
 
I don't know the exact answer, because I just finished a very simplified version of this for my eighth grade class, but see if you can use either Boyle's or Charle's gas laws. I think that its Boyle's that you are dealing with. And you might also have to convert Celsius to Kelvins.

I forget how you do that though sorry.
 
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