Question 685728
{{{feet/5280 = miles}}}.......=> {{{77ft=(77/5280)mil=0.01458mil}}}
{{{seconds / 3600 = hours}}}.......=> {{{10sec=(10/3600)h=0.0028h}}}

{{{(77feet/10second) =(0.01458/0.0028)(miles/hour)=5.207(miles/hour)}}}