CBSE 2014 Class 12 Economics Outside Delhi Set-1

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Question : 14
Total: 19
Calculate Marginal Propensity to Consume from the following data about an economy which is in equilibrium:
National income =2000
Autonomous consumption expenditure =200
Investment expenditure =100
Solution:  
Given,
National Income (Y)=2000
Autonomous consumption expenditure =200
Investment expenditure =100
As we know in equilibrium,
Y=C+I
Since, C=C+cY
We get Y=C+cY+I
2000=200+c(2000)+100
1700=2000c
c=0.85
Therefore, marginal propensity to consume is 0.85 .
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