1. **State the problem:** Rekha and Dema both work in sales. Rekha earns a salary of 12000 per month plus a 5% commission on sales. Dema earns a salary of 12500 per month plus a 3% commission on sales. Both sold goods worth 50000 in January. We need to find who earned more money that month. 2. **Calculate Rekha's total earnings:** - Salary = 12000 - Commission = 5% of 50000 = $0.05 \times 50000 = 2500$ - Total earnings = Salary + Commission = $12000 + 2500 = 14500$ 3. **Calculate Dema's total earnings:** - Salary = 12500 - Commission = 3% of 50000 = $0.03 \times 50000 = 1500$ - Total earnings = Salary + Commission = $12500 + 1500 = 14000$ 4. **Compare earnings:** - Rekha earned 14500 - Dema earned 14000 5. **Conclusion:** Rekha earned more money in January by $14500 - 14000 = 500$.