waecmaths question:
Simplify $(\tfrac{3}{4}-\tfrac{2}{3})\times 1\tfrac{1}{5}$
Option A:
$\tfrac{1}{60}$
Option B:
$\tfrac{5}{72}$
Option C:
$\tfrac{1}{10}$.
Option D:
$1\tfrac{7}{10}$
waecmaths solution:
$\begin{align} & (\tfrac{3}{4}-\tfrac{2}{3})\times 1\tfrac{1}{5}=(\tfrac{3}{4}-\tfrac{2}{3})\times \tfrac{6}{5} \\ & (\tfrac{3}{4}-\tfrac{2}{3})\times 1\tfrac{1}{5}=(\tfrac{9-8}{12})\times \tfrac{6}{5} \\ & (\tfrac{3}{4}-\tfrac{2}{3})\times 1\tfrac{1}{5}=\tfrac{1}{12}\times \tfrac{6}{5} \\ & (\tfrac{3}{4}-\tfrac{2}{3})\times 1\tfrac{1}{5}=\tfrac{1}{10} \\\end{align}$
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