Jenna walked to the
store in 15.4 minutes. She
bought Band-Aids for
$0.55, gauze for $1.29,
and suntan lotion for
$2.89. She gave the
clerk a $10 bill. She left
the store at 3:45 a.m. It
took her 18.4 minutes to
walk home. How much
longer did it take her to
walk home than it took
to walk to the store?