Question 701378
Mom drives the car home in a quarter of the time it takes you to walk, three quarters of an hour. so she takes 
{{{(1/4)*(3/4)}}}={{{3/16}}} of an hour to drive.
this will save
{{{3/4-3/16=9/16}}} of an hour every day.
to find the total time saved over the school year
{{{(9/16)*37*5}}}=104{{{1/16}}} hours
(one hundred and four and one sixteenth hours)