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Calculate the velocity of sound in air o...

Calculate the velocity of sound in air on a day when temperature is `30^(@)C`, pressure `0.74 m` of mercury and relative humidity `60%`. Velocity of sound at NTP `=330 m s^(-1)`. Saturated vapour pressure at `30^(@)C=0.032 m` of mercury.
`[["Hint: Relative Humidity "=("Vapour pressure at "30^(@)C)/("Saturated vapour pressure at "30^(@)C)],[C_(m)=C_(d) sqrt(P/(P-0.385f))]]`

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