Answer:
The price level will increase 20%. The right answer is B.
Step-by-step explanation:
In order to calculate how much will the price level increase, we require to calculate according to the data we have the new price level.
Hence, New price level = 6 + [ (1 - 4 / 10) * 2 ]
= 6 + [ (1 - 0.40) * 2 ]
= 6 + (0.60 * 2)
= 6 + 1.20
= $ 7.20
Therefore, the Increase in price level = (7.20 - 6) / 6
= 1.20 / 6
= 0.20=20 %
The price level will increase 20%.