What is the percentage return from currency arbitrage if pound is quoted 1.6294-1.6627 francs in Geneva and price of francs in London is 0.6037-0.6482 pounds? Specify which currency is being purchased/sold at what price in which city?

Why would a business be concerned about currency when operating around the world?

Why would a nation dollarize another country's currency instead of having its own?

Why is the foreign currency exchange market important to a business?

Why is the European Union an optimal currency area? Define Optimal Currency Area