6. Margit is paid on a weekly commission basis. She is paid a base salary of $540 on a weekly quota of $8000 and a commission of 4.75% on any sales in excess of the quota. (a) If Margit's sales for last week were $11 340, what were her gross earnings? (b) What were Margit's average hourly earnings if she worked 35 hours? (3 marks)