Impact of Exchange rates on a Country's Purchasing Power
Lets say Country X is purchasing products who's pricing is determined in Country Y's exchange rate.
1) If Country X's currency looses value against Currency Y, will that be immediately impact the purchasing power of consumers in Country X?
2) Will this be immediately reflected in Country X's CPI?
2) If not, what is a good indicator of when and by how much to adjust product prices for Country X to reduce the impact of changing exchange rates?
Any theory I can research would be great as well.
Thanks in advance.