I searched a little online and saw that dS/dI = 1 - dC/dI so if i wanted the marginal propensity to consume could I use dC/dI = 1 + dS/dI?
I am given the marginal propensity to SAVE:
and the first part of the question asks me to: find marginal propensity to CONSUME when total national income (I) is 81 billion
what exactly do I need to do? what is the formula used?
The chapter I am working on is integrals. Thank you!