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Determination Of Income And Employment

Question
CBSEENEC12013052

Given that national income is र 80 crore and consumption expenditure is 64 crore. Find out average propensity to save (APS). When income rises to र 100 crore and consumption expenditure to र 78 crore, what will be APC and MPC?

Solution

(i) APS space equals space straight S over straight Y space equals space fraction numerator 16 left parenthesis space equals space 80 space minus space 64 right parenthesis over denominator 80 end fraction space equals space 1 fifth space equals space 0.2
(ii) When income rises to 100 crores and consumption expenditure to 78 crore, then ΔY = 20(=100 – 80)    and ΔC = 16(=78 - 64).
APC space equals space straight C over straight Y space equals space 78 over 100 space equals space 0.78
MPC space equals space fraction numerator increment straight C over denominator increment straight Y end fraction space equals space 16 over 20 space equals space 4 over 5 space equals space 0.8