1. The problem involves understanding the relationship between hours worked and weekly earnings. 2. We can use the formula for hourly wage: $$\text{Hourly Wage} = \frac{\text{Weekly Earnings}}{\text{Hours Worked}}$$ 3. For the first data point: Weekly Earnings = 400, Hours Worked = 10. 4. Calculate hourly wage: $$\frac{400}{10} = 40$$ 5. For the second data point: Weekly Earnings = 200, Hours Worked = 20. 6. Calculate hourly wage: $$\frac{200}{20} = 10$$ 7. For the third data point: Weekly Earnings = 10, Hours Worked = 30. 8. Calculate hourly wage: $$\frac{10}{30} = \frac{1}{3} \approx 0.33$$ 9. These calculations show how hourly wage varies with hours worked and earnings. 10. The formula and method can be applied to other similar problems involving earnings and hours.