Answer:
as soon as he sells more than 6500Birr he earns 8% commission
he sold for 11,800
we calculate 11800-6500=5300
we calculate 8% of 5300 = (5300*8)/100=424
he has a fixed salary of 900Birr
his salary the month he sold for 11800: 900+424=1324Birr: