Mathematics
Grand-Tests
Easy
Question
The equation 5D - R = 40 gives the relationship between the dew point D, in degrees Celsius (° C), and relative humidity R, as a percent, when the air temperature is 28° C. At that temperature, what is the relative humidity, as a percent, when the dew point is 14° C?
- 30
- 42
- 70
- 110
The correct answer is: 30
On substitution in equation, option (A).
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f(x) = -6.5x + 15
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