CBSE 2015 Class 12 Economics Outside Delhi Set-3

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Question : 2
Total: 3
An economy is in equilibrium. Calculate the national Income from the following:
Autonomous Consumption =120
Marginal Propensity to Save =0.2
Investment Expenditure =150
Solution:  
Autonomous Consumption =120
‌ MPS ‌‌=0.20
‌ (b) ‌MPC‌=1−MPS=1−0.20=0.86
I‌=150
Y‌=?
Y‌=C+I
C‌=a+by
‌=120+0.8Y
Y‌=120+0.8Y+150
1Y−0.8Y‌=270
0.2Y‌=270
∴Y‌=‌
270
0.20
=1350
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