How is the marginal propensity to import calculated? The marginal propensity to import is equal to O A disposable income minus consumption expenditure minus saving divided by real GDP . B. the change in Imports divided by the change in real GDP, other things remaining the same OC Imports minus exports OD. the change in net imports divided by the change in disposable income, other things remaining the same How is the marginal propensity to import calculated? The marginal propensity to import is equal to O A disposable income minus consumption expenditure minus saving divided by real GDP . B. the change in Imports divided by the change in real GDP, other things remaining the same OC Imports minus exports OD. the change in net imports divided by the change in disposable income, other things remaining the same