Answer:
a. 1 Pound/1.29 or 0.78 Pound/Mark
b. Overvalued
Explanation:
a. What should the pound-mark exchange rate be in 2012?
Ratio of Pacifica pound to Atlantica mark in 2012 = 360/280 = 1.29
Or,
Ratio of Atlantica mark to Pacifica pound in 2012 = 280/360 = 0.78
Therefore, according to the relative purchasing power parity (PPP) theory, one Pacifica pound should equal to 1.29 Atlantica mark, i.e. 1 Pound/1.29 Mark.
This can also be stated differently that 1 Atlantica mark should equal to 0.78 Pacifica pound, i.e. 0.78 Pound/Mark.
b. If the actual pound per mark exchange rate is 0.5 pound/mark in 2012, is the mark overvalued or undervalued relative to its PPP value
Since the PPP pound per mark exchange rate value estimated in a above is 0.78 Pound/ Mark is higher than the actual pound per mark exchange rate of 0.5 pound/mark in 2012, mark is therefore overvalued.