$1-$ A stone builder works $8$ hrs$./$day$,5$ days$/$week$.$ He produces $8sq.$ m$.$ per day. A base wage of

$25$ NIS per hour is paid for normal hours $(8$:$00$ AM$-4$:$00$ PM$).$ Overtime $($if he works more than $8$

hrs$.)$ is allowed with a different wage rate based on labor law $(1\mathrm{.}5hrs.$ per overtime hour$).$

Maximum overtime hours are $3$ hours a day. The social security tax is $5\mathrm{.}5\%$ of the actual wage and

the health insurance is $10\%$ of the base wage. The owner has $820$ sq$.$ m$.$ of building walls.

Calculate:

If overtime is not allowed.

Daily salary of a stone builder.

Daily progress of a stone builder.

Number of days needed to finish the work in hours and days.

Total salary given to the stone builder.

Total labor cost

If $2$ hours of overtime are allowed.

Daily salary of a stone builder.

Daily progress of a stone builder.

Number of days needed to finish the work in hours and days.

Total salary given to the stone builder.

Total labor cost