Question 1022844
Hi there,
Billy worked 42.5 hours per week in July.
This is 12.25 hours more per week than 
he worked in June. 
 42.5 hours = 42hours 30 minutes
12.25 hours = 12 hours 15 minutes
In June Billy worked:-
42 hours 30 minutes - 12 hours 15 minutes
= 30 hours 15 minutes
or 13.25 hours.
Hope this helps :-)