ideal gas is kept under constant pressure of 1 atm. If initial temperature is 301K and the volume increases by 10% what is the final temperature of the gas?

T2=?
V1/V2= T1/T2
V1/V2= (301K)/T2
.10/1= (301K)/T2
Is the side with volume correct? The 10% part confuses me. Thanks for your help.