Relative humidity = S.V.P at dew pointS.V.P at air temperature\frac{\text{S.V.P at dew point}}{\text{S.V.P at air temperature}}S.V.P at air temperatureS.V.P at dew point
S.V.P at dew point = 7.3mmHg
S.V.P at air temperature = 13.5mmHg
R.H = 7.313.5\frac{7.3}{13.5}13.57.3 x 100 ≈eq\approx \text{eq}≈eq 54%
