Test Index

WAEC Mathematics 2018 Paper

© africaexams.com

Question : 8

Total: 50

If F =

\;\frac{9}{5}

C + 32, find C when F = 98.6

30
37
39
41

Solution:

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

© africaexams.com

Go to Question:

Prev Question

Next Question