Continue using the same environment for this question: Sheila lives for two periods. She earns $100 in the rst period and $110 in the second period. She wants to consume exactly the same amount in both periods. The interest rate at which she can save and borrow is 10%. There is no ination. Now suppose that Sheila's rstperiod income goes up by 5%. What is her marginal propensity to consume? Provide your answer as a decimal number, not a percentage, and approximate it to three decimal places (i.e., if your answer is 0.876, type in "0.876", not "87.6%")