1 mole of a gas having gamma = 7/5is mixed with 1 mole of a gas having gamma = 4/3 , what will be the gamma for the mixture?

1 mole of a gas having gamma = 7/5is mixed with 1 mole of a gas having

1.	1 mole of a gas having gamma = 7/5is mixed with 1 mole of a gas having gamma = 4/3 , what will be the gamma for the mixture?
Answer» `5/11` `15/13` `15/11` `5/13` ANSWER :C