Answer:
Gross weekly wage = (Income tax + Tax credit) / Tax rate
We know that the income tax is €140, the tax credit is €60, and the tax rate is 20%. Plugging these values into the formula, we get:
Gross weekly wage = (€140 + €60) / 0.2 Gross weekly wage = €200 / 0.2
Gross weekly wage = €1000
Therefore, the gross weekly wage of the bus driver is €1000.