The correct option is B
<u>Explanation:</u>
In an economy, planned investment spending is always equal to planned saving. If actual saving falls short of (exceeds) planned saving, then actual investment falls short of (exceeds) planned investment.
That is the other part of the saving paradox. If an economy produces too much, such that saving is greater than planned investment, inventory will build up, giving signal to producers to reduce output, to restore equilibrium. Such investment scheme is suitable only to communist countries. Keynes has another investment theory in his liquidity story. But investment theories are equally a posterior.
Therefore, Option B is correct
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Answer:
Average waiting time = 7.5 minutes
Explanation:
UTD private secretary can type the number of letters = 4 per hour by each.
By professor, the letter generated = 3 per hour by each
Thus by pooling the average time will be the time that comes by dividing the one hour with total letters in an hour.
Use the below formula:
Average waiting time = Minutes in one hour / total letters
Average waiting time = 60 / 8
Average waiting time = 7.5 minutes