91Ó°ÊÓ

Formula to calculate multiplier is

$Multiplier=1/1-MPC$

Where,

Marginal Propensity to Consume is represented by $MPC$

Calculate Multiplier when Marginal Propensity to save $MPS=0.25$

Multiplier$=\frac{1}{1-MPC}$

$=\frac{1}{1-MPC}\left(\begin{array}{l}âˆ\mu MPC+MPS=1\\ MPC=1-MPS\end{array}\right)$

$=\frac{1}{1-(1-MPS)}$

$=\frac{1}{1-1+MPS}$

$=\frac{1}{MPS}$

$=\frac{1}{0.25}$

Multiplier$=4$

Therefore, the multiplier is $4$.

Calculation of Multiplier when the Marginal Propensity to Consume $MPC=5/6$

Multiplier $=\frac{1}{1-MPC}$

$=\frac{1}{1-\left(\frac{5}{6}\right)}$

$=\frac{1}{\left(\frac{6-5}{6}\right)}$

$=\frac{1}{\left(\frac{1}{6}\right)}$

$=\frac{1}{1}×\frac{6}{1}$

$=\frac{6}{1}$

Multiplier=$6$

Therefore, The Multiplier is$6$.

Calculate Multiplier when The Marginal Propensity to save $MPS$$=0.125$$:$

Multiplier$=\frac{1}{1-MPC}$

$=\frac{1}{1-MPC}\left(\begin{array}{l}âˆ\mu MPC+MPS=1\\ MPC=1-MPS\end{array}\right)$ localid="1651544551902" $=\frac{1}{1-(1-MPS)}$

localid="1651544570845" $=\frac{1}{1-1+MPS}$

$=\frac{1}{MPS}$

localid="1651544587536" $=\frac{1}{0.125}$

Multiplier =$8$

Therefore, The Multiplier =$8$

Calculate Multiplier when The Marginal Propensity to Consume $MPC=6/7$

Multiplier$=\frac{1}{1-MPC}$

$=\frac{1}{1-\left(\frac{6}{7}\right)}$

$=\frac{1}{\left(\frac{7-6}{7}\right)}$

$=\frac{1}{\left(\frac{1}{7}\right)}$

$=\frac{1}{1}×\frac{7}{1}$

$=\frac{7}{1}$

Multiplier $=7$

Therefore ,The Multiplier =$7$.