政府税收增加1000亿美元，如果边际消费倾向是0.6，以下项目会发生什么变化？它们增加了，还是减少了？增加或减少

了多少？

a．公共储蓄

b．私人储蓄

c．国民储蓄

d．投资

The government raises taxes by ＄100 billion. If the marginal propensity to consume is 0.6, what happens to the following？ Do they rise or fall？ By what amounts？

a．Public saving.

b．Private saving.

c．National saving.

d．Investment.