$.$ A project was expected to be completed in $12$ weeks by a crew of $6$ workers. The

work was to be completed without overtime, working $40-$hour workweeks. Workers

were to be paid $$50$ per hour, including all fringes. However, before construction

began, the owner decided that the project schedule would be accelerated by having

the workers work $8$ hours on Saturdays, with wages paid time$-$and$-$a$-$half on

Saturdays