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Determination Of Income And Employment

Question
CBSEENEC12013049

In an economy 75% of increase in income is spent on consumption. Investment is increased by र 1000 crores. Calculate:
(a) Total increase in income, and
(b) Total increase in consumption expenditure.

Solution
MPC space equals space 75 over 100 equals space 3 over 4
straight K space equals 1 over MPS space equals space fraction numerator 1 over denominator 1 divided by 4 end fraction space equals space 4 space
therefore  MPS space equals space 1 minus 3 over 4 space equals space 1 fourth
(a) straight K space equals fraction numerator increment straight Y over denominator increment straight I end fraction space or space 4 space equals space fraction numerator increment straight Y over denominator 1000 end fraction space or space space increment straight Y space equals space 4 space cross times space 1000 space equals space 4000
Increase in income = 4000 crores.
(b) Increase in consumption expenditure, i.e., ΔC
ΔC = ΔY – ΔI
= 4000 – 1000 = 3000 crores.