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WAEC Mathematics 2017 Paper

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Question : 8

Total: 49

Solve the equation:

\;\frac{1}{5x} + \;\frac{1}{x}

= 3

$\;\frac{1}{5}$
$\;\frac{2}{5}$
$\;\frac{3}{5}$
$\;\frac{4}{5}$

Solution:

$\;\frac{1}{5x} + \;\frac{1}{x}$ = 3

$\;\frac{1\;+\;5}{5x}$ = 3

6 = 15x

x = $\;\frac{6}{15}$

= $\;\frac{2}{5}$

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