1.Michelle is a sales agent. She receives a salary of ₱21,400 plus a commission of 7% on all sales. Last month, her total sales were ₱13, 220. How much did she earn for the month?

2.Olive receives a 5% commission on the first ₱10,000.00 worth of dry goods sold each week, 8% on the next ₱12,000.00 and 10% on any goods sold in excess of ₱22,000.00. If her sales amounted to ₱48,600.00, how much were her earnings?
3.Ms. Kang, a saleswoman, receives a monthly salary of ₱9,400 plus 9% commission on all sales over ₱45,000. What was her total earnings during the month if her sales amounted to ₱62,400?