Question on: WAEC Mathematics - 2018
If F = \(\frac{9}{5}\)C + 32, find C when F = 98.6
A
30
B
37
C
39
D
41
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Correct Option: B
F = \(\frac{9}{5}\)C + 32
When F = 98.6
98.6 = \(\frac{9}{5}\)C + 32
98.6 - 32 = \(\frac{9}{5}\)C
66.6= \(\frac{9}{5}\)C
66.6 x 5 = 9C
C = \(\frac{66.6 \times 5}{9}\)
= 37
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