If the Keynesian consumption function is C = 10 + 0.8 Td when disposable income is Rs1000 the marginal propensity to consume is what ? May 31, 2019 – by admin If the Keynesian consumption function is C = 10 + 0.8 Td when disposable income is Rs1000 the marginal propensity to consume is what ? A. 0.8 B. 800 C. 810D. 0.81