Answer:
$22
Explanation:
Ward works 9 hours each day
So, he works in 6 days for hours =

So, he works for 54 hours in 1 week.
So, He sells 11 fax machine in 54 hours
So, he sells fax machines in 1 hour =

He earns $108 for each fax machine
So, He earns for
fax machine =

=

Hence his average hourly wage is $22.