If the U.S. dollar-British pound exchange rate is $1.50 per pound, and the U.S. dollar-euro rate is

Question:

If the U.S. dollar-British pound exchange rate is $1.50 per pound, and the U.S. dollar-euro rate is $0.90 per euro:

a. What is the pound per euro rate?

b. How could you profit if the pound per euro rate were above the rate you calculated in part a? What if it were lower?

Exchange Rate
The value of one currency for the purpose of conversion to another. Exchange Rate means on any day, for purposes of determining the Dollar Equivalent of any currency other than Dollars, the rate at which such currency may be exchanged into Dollars...