Answer: 3000B
Explanation:
Firstly, we calculate the spending multiplier which will be:
= 1 / (1 -MPC).
= 1 / ( 1 - 0.9)
= 1 / 0.1
= 10
The increase in the real GDP will then be gotten by multiplying the multiplier by the increase on investment. This will be:
= 10 × 300
= 3000B
