Question on finding absolute pressure?

[delfinofrank]

Hey, here's the question:

"If a gauge reads -295mmHg where athmospheric pressure is 101.7 kn/m^2 and the vapor pressure is 2.8 kN/m^2, what is the absolute pressure?"

I converted the gauge pressure to 39.36 kN/m^2 but where do i go from here? I know the equation is p_gauge= p_absolute - atmospheric, but where do I factor in the vapor pressure?!

Please help! Thank you :)

 

[Redbelly98]

I converted the gauge pressure to 39.36 kN/m^2 but where do i go from here? I know the equation is p_gauge= p_absolute - atmospheric, but where do I factor in the vapor pressure?!

I think your equation is correct. I'm reasonably sure that the vapor
pressure is not a factor here. It seems that was included just to throw you off track.