Answer: $0 billion
Explanation:
Money spent for consumption is the difference between Disposable income and Savings.
Disposable income increase:
= 1,092 - 912
= $180 billion
Savings increased by $180 billion which is equal to the change in Disposable income.
Change in consumption = Change in disposable income - change in savings
= 180 - 180
= $0 billion