Question 1128431
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<pre>
The rate (the speed) = {{{Distance/Time}}} = {{{323}}} : {{{4}}}{{{45/60}}} = {{{323}}} : {{{4}}}{{{3/4}}} = {{{323/((19/4))}}} = {{{(323*4)/19}}} = 17*4 = 68 miles per hour.
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