Alright, so Ron parked his car for 8 hours at $3 per hour.
Harry parked his car for 7 hours at $3 per hour.
So, per day Ron is spending (8 * 3) = $24 a day
and Harry is spending ( 7 * 3 ) = $21 a day
So now solve for 5 days. 24 * 5 = $120 21 * 5 = $105
Add both together
$120
+
$105
=
Your Answer:
$225 altogether.