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Sagot :
So we need to express 7 ft 6 in in inches and in feet. For this purpose is important to remember this relation:
[tex]1ft=12in[/tex]So in a we need to express 7ft 6in in inches. This means we must convert the 7ft into inches and then add the result to 6in. If we use the rule of thre we get:
[tex]\begin{gathered} 1ft\rightarrow12in \\ 7ft\rightarrow x \\ \text{Where }x=\frac{7ft\cdot12in}{1ft}=84in \end{gathered}[/tex]Then we get:
[tex]7ft+6in=84in+6in=90in[/tex]So the answer to part a is 90in.
For part b we can take the result of part a and convert it into feet. Using the rule of three again we get:
[tex]\begin{gathered} 12in\rightarrow1ft \\ 90in\rightarrow x \\ \text{Where }x=\frac{90in\cdot1ft}{12in}=7.5ft \end{gathered}[/tex]Then the answer to part b is 7.5ft.
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