rsiddanati rsiddanati

16-09-2018
Mathematics

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A speed walker covered 4 1/2mi in3/4hour. How far will he walk with the same pace in: 2 hour

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16-09-2018

[tex]\begin{array}{ccc}4\dfrac{1}{2}\ mi&-&\dfrac{3}{4}\ h\\\\x\ mi&-&2\ h\end{array}\ \ \ cross\ multiply\\.\\\\\dfrac{3}{4}x=2\cdot4\dfrac{1}{2}\\\\\dfrac{3}{4}x=9\ \ \ \ |\cdot\dfrac{4}{3}\\\\x=12\ mi\\\\Answer:\ 12\ mi[/tex]

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