Final answer:
The values of 1 EURO, 1 Yen, 1 Dollar, and 1 pound are different, as determined by exchange rates. The exchange rates can change dramatically due to various factors. A decrease in the cost of the British pound against the dollar indicates a weaker pound and an appreciating dollar.
Step-by-step explanation:
The value of 1 EURO, 1 Yen, 1 Dollar, 1 pound are different. Each currency has its own value which is determined by the exchange rates that fluctuate based on a variety of factors including economic conditions, political stability, and market speculation. These values can change swiftly, as in the case of the British pound around the time of the Brexit vote. Factors such as a nation's decision to change from a common currency like the euro back to its own can arise from problems within the shared currency system, and have serious implications for international trade and finance.
In 2008, if a British pound cost $2.00 and in 2017 it cost $1.27, this indicates that the pound became weaker against the dollar, meaning the dollar appreciated versus the pound.