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JAMB UTME

T(°C) s.v.p (mm Hg)
0 4.58
5 6.51
10 8.94
15 12.67
20 17.50
40 55.10
60 149.00
The table above shows the saturation vapour pressure against temperature in a certain town. If the vapour pressure in this town at 20oC is 10 mmHg, what is the relative humidity?

A.
170.0%
B.
57.0%
C.
17.5%
D.
10.0%

Answer: B

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