I've been trying to figure this problem out all day and I STILL don't know how to solve for the specific heat constant. I blank after I set up the problem. Somebody please help me!!!

What is the specific heat constant if 621 g of Metal A raises the temperature of 500.0 g of water by 3.20°C and the temperature of the metal decreases by 42.5°C.

I think I showed you how to set this up earlier. Please post what you've done so I can figure out where your trouble is.