Mixture of Gases_19 [AIEEE 2011]

Two moles of an ideal gas with C_P/C_V =5/3 are mixed with 3 moles of another ideal gas with C_P/C_V =4/3. The value of C_P/C_V for the mixture is:
(a) 1.45 (b) 1.50 (c) 1.47 (d) 1.42
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