Question 889721
Rate*Time=Distance
{{{R[1]*T[1]=R[2]*T[2]}}}
{{{R[1]*3=6*4}}}
{{{R[1]=24/3}}}
{{{R[1]=8}}}
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Now average {{{R[1]}}} and {{{R[2]}}}
{{{R[ave]=(R[1]+R[2]))/2}}}
{{{R[ave]=(6+8)/2}}}
{{{R[ave]=7}}} {{{km/h}}}