Can the above 3 parts be answered and explained please.

Calculation steps and formulas to be included please.

4. You observe the following quotes for the USD/AUD in the spot market from two banks: Bank of Sydney Bid Ask 0.71711 0.71715 Bank of New York Bid Ask 0.71708 0.71715 Do these quotes imply the possibility of earning a profit by using locational arbitrage? If so, calculate the potential profit if you are able to use AUD 25,000. If not, explain why arbitrage is not possible? (b) You observe the following quotes for the GBP /AUD in the spot market from two banks: Bank of Melbourne Bid Ask 0.5458 0.5459 Bank of London Bid Ask 0.5514 0.5515 Do these quotes imply the possibility of earning a profit by using locational arbitrage? If so, calculate the potential profit if you are able to use GBP 50,000. If not, explain why arbitrage is not possible? c) You observe the following quotes for the EUR / USD in the spot market from two banks: Deutsche Bank Bid Ask 1.18102 1.18102 Bank of America Bid Ask 1.18094 1.18100 Do these quotes imply the possibility of earning a profit by using locational arbitrage? If so, calculate the potential profit if you are able to use EUR 500,000. If not, explain why arbitrage is not possible