A sample of the inert gas krypton has its pressure tripled. if the original volume is 12 l, what is the final volume in l

According to Gas Law, PV = nRT where, P : Pressure V : Volume n : number of moles R : Gas Constant T : Temperature since, P is indirectly proportional to V therefore, P1/V1 = P2/V2 P2 = 3*P1 P1/12 = 3*P1/V2 V2 = 36 L Answer : 36 L