Question: Assume that you can borrow up to $1,000 or £800 and you observe the following:
Spot exchange rate S($/£) = $1.25/£
360-day forward rate F360($/£) = $1.40/£
U.S. discount rate i$ = 3%
British discount rate i£ = 1%
Determine whether an arbitrage opportunity is possible, and the arbitrage profit in dollars in such case. Clearly indicate the steps you would take to realize the arbitrage profit.