# Frequent question: How is saving and investment approach derived from the aggregate demand and supply approach of income determination?

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It is derived from Aggregate Demand and supply approach in the following way: Aggregate Demand in a two sector economy is defined as the sum of consumption expenditure(c) and investment expenditure (I) i.e. AD = C + I, where as Aggregate Supply is defined as the sum of consumption (c) and savings (s) i.e. AS = C + S.

## How does the equilibrium level of income determined with saving and investment approach using diagram?

According to this approach, the equilibrium level of income is determined at a level, when planned saving (S) is equal to planned investment (I). In Fig 8.2, Investment curve (I) is parallel to the X-axis because of the autonomous character of investments.

## How is equilibrium determined from saving and investment approach?

The equilibrium level of national income is established at the point where aggregate demand equals aggregate supply. … Given the aggregate demand curve C + I, the amount of saving at income greater than OY1 exceeds investment and for income less than OY1 investment exceeds saving.

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## What is an economy in equilibrium explain with the help of saving and investment function?

The economy is in equilibrium at that income level at which saving = investment. The equilibrium level of income is OM as at this level S = I. When the economy is not in equilibrium saving is not equal to investment : Suppose S > 1 it means , AD < AS. This leads to piling up of inventories with the producers.

## How do savings and investments determine income?

When in a year planned investment is larger than planned saving, the level of income rises. At a higher level of income, more is saved and therefore intended saving becomes equal to intended investment. On the other hand, when planned saving is greater than planned investment in a period, the level of income will fall.

## What is the relationship between savings and investment?

The difference between savings and investment is that saving is often deposited into a bank savings account or a fixed deposit. On the other hand, investing involves buying assets such as real estate, gold, stocks, or shares in mutual funds that have the potential to increase in value over time.

## How do you derive equilibrium income?

Most simply, the formula for the equilibrium level of income is when aggregate supply (AS) is equal to aggregate demand (AD), where AS = AD. Adding a little complexity, the formula becomes Y = C + I + G, where Y is aggregate income, C is consumption, I is investment expenditure, and G is government expenditure.

## How is equilibrium achieved through AD and AS approach?

Aggregate Demand-Aggregate Supply Approach (AD-AS Approach):

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According to the Keynesian theory, the equilibrium level of income in an economy is determined when aggregate demand, represented by C + I curve is equal to the total output (Aggregate Supply or AS).

## How is investment multiplier value determined?

The extent of the investment multiplier depends on two factors: the marginal propensity to consume (MPC) and the marginal propensity to save (MPS). A higher investment multiplier suggests that the investment will have a larger stimulative effect on the economy.

## What do you mean by aggregate demand and aggregate supply?

Aggregate supply is the total amount of goods and services that firms are willing to sell at a given price in an economy. The aggregate demand is the total amounts of goods and services that will be purchased at all possible price levels.

## How do savings and investment help in economic growth?

A rise in aggregate savings would yield larger investments associated with higher GDP growth. As a result, the high rates of savings increase the amount of capital and lead to higher economic growth in the country.

## How does saving and investing help the economy?

The overall level of investment is one of the main determinants of long-term economic growth. … As personal saving contributes to investment, all else equal, a higher saving rate will result in a higher level of physical capital over time, allowing the economy to produce more goods and services.

## How do investments help the economy?

Business investment can affect the economy’s short-term and long-term growth. … In the long term, a larger physical capital stock increases the economy’s overall productive capacity, allowing more goods and services to be produced with the same level of labor and other resources.

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## What is saving and investment income?

Investment income is the profit that is earned from investments such as real estate and stock sales. Dividends from bonds also are investment income. … If you have a savings account, the interest you earn on it is considered investment income.