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Evaluate \(\frac{81.81+99.44}{20.09+36.16}\) correct to 3 significant figures.

Mathematics
JAMB 2009

Evaluate \(\frac{81.81+99.44}{20.09+36.16}\) correct to 3 significant figures.

  • A. 6.24
  • B. 3.22
  • C. 2.78
  • D. 2.13
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Correct Answer: Option B
Explanation

\(\frac{81.81 + 99.44}{20.09 + 36.16}\\
=\frac{181.25}{56.25}\\
=\frac{18125}{5625}\\
\frac{29}{9}\\
=3\frac{2}{9}\\
≅ 3.22\)

There is an explanation video available below.


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Explanation Video

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WAEC Past Questions, Objective & Theory, Study 100% offline, Download app now - 24709
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WAEC Past Questions, Objective & Theory, Study 100% offline, Download app now - 24709
WAEC May/June 2024 - Practice for Objective & Theory - From 1988 till date, download app now - 99995