Explanation:
a. Cece suppose the Singapore to appreciate versus the U.S. dollar, she will bought Singapore dollars. She will get the right to buy the Singapore dollar in the date of future at $0.6500/S$ each, and therefore in the open market she can quickly resell them at $0.7001/S$ each for her profit. (if her expectation is right for future.)
b. Break even Price = Strike price US$ + Premium US$
= 0.6500 + 0.00046
= US$0.65046
c. Gross Profit and Net Profit
Gross profit = Spot rate US$ - Strike price US$
= $0.7001 - $0.00046
= $0.04964$S
Net profit = Spot rate US$ - Strike price US$ - Premium US$
= $0.7001 - $0.00046 - $0.00046
= $0.04964$S
d. Gross Profit and Net Profit
Gross profit = Spot rate US$ - Strike price US$
= $0.8006 - $0.6500
= $0.1506$S
Net Profit = Spot rate US$ - Strike price US$ - Premium US$
= $0.8006 - $0.6500 - $0.00046
= $0.15014$S