Let the total sales be x
(1) 1200-500=0,2*(x-1500) - Suff
(2) 700=0,2*(x-1500) - Suff
Answer D.
(1) 1200-500=0,2*(x-1500) - Suff
(2) 700=0,2*(x-1500) - Suff
Answer D.









