Physical Chemistry – Partial Pressures

Been stuck on this a while, and I’m not sure how to reach a specific answer without any mass/moles/density given, to plug into ideal gas law PV=nRT

A container with a removable partition contains gas A and gas B. Gas A is at 400K and 10.0 atm and gas B is at 400K and 4.00 atm. The partition is remove…