Suppose absolute purchasing power holds true between two countries, Home and Foreign, and

the price level increases $4\%$ in Home and it decreases by $2\%$ in Foreign.

$($a$.)$ What happens to the price of Foreign$$s currency in terms of Home$$s currency?

$($b$.)$ What is the real exchange rate, defined as the price of one unit of the foreign basket of goods

in terms of units of the domestic basket of goods?