First, how many periods of 6 hours are in 24 hours? 24 / 6 = 4.
So every 6 hours, Katie needs 2.5 drops.
Seeing as there are 4 periods of 6 hours in 24 hours, you would do 2.5 x 4.
Katie will receive 10 drops of medication in 24 hours.
The answer would be *edited* 41
5+2h i think this is how it would be represented
Recall that

Also, recall that for all
,

With
, we can expect
, and with
,
. So from the above identity it follows that

and

and so

$7.25-$2.85= $4.40
$4.40/8= $0.55
Each orange costs $0.55