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Which one of the following is correct formula for deriving the investment multiplier?

A. 1/(1 - MPC)

B. 1/MPS

C. 1/(1 - MPS)

D. (1 - MPC)/MPS

Choose the correct answer from the options given below:

Solution

✅ Correct Option: 1

The investment multiplier is k=11−MPCk = \frac{1}{1-MPC}, and since MPS=1−MPCMPS = 1 - MPC, equivalently k=1MPSk = \frac{1}{MPS}. 11−MPS=1MPC\frac{1}{1-MPS} = \frac{1}{MPC} is not the multiplier, and 1−MPCMPS=1\frac{1-MPC}{MPS} = 1. Hence A and B only.

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