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A worker is to connect three equal sections of pipe. Each section is [tex]6 \frac{2}{3}[/tex] metres in length.

How long is the connected section of pipe?

A. 19 [tex]\frac{1}{3}[/tex] metres
B. 20 metres
C. 20 [tex]\frac{1}{16}[/tex] metres
D. 20 [tex]\frac{1}{6}[/tex] metres

Answer :

[tex]6\frac{2}{3}\implies 6+\frac{2}{3}\implies \stackrel{\textit{three times that much}}{3\left( 6+\frac{2}{3} \right)\implies} (3\cdot 6)+3\left( \frac{2}{3} \right)\implies 18+2\implies \underset{meters}{20}[/tex]

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