If
the cost of the total production at the beginning of the period is
800 SAR, and the cost of the total production at the end of the
period is 850 SAR, and 12,000 SAR sales revenue, 2200 SAR the cost
of total production during the period, 500 SAR administrative
expenses, 150 SAR of water and electricity expenses for the public
administration, 200 SAR selling expenses, 3000 SAR salary of the
director of the administration. Net profit is equal to?
and
cost of sales is equal to?