13. If national income is 1,200 consumption is 600 taxes are 200 and government purchases are 300 then national sfying is a. 300. b 400 C. 500 d. 600

To calculate national saving, we need to use the following formula:National Saving = National Income - Consumption - Taxes - Government PurchasesGiven:National Income = 600Taxes = 300Substituting the values into the formula:National Saving = 600 - 300National Saving = 400