3. Suppose you observe the following spot exchange rates: S($/) = 1.25, S($/5) = 2. What is the euro-pound cross rate S(/)? 4. Suppose you observe the following spot exchange rates: $1 = 1.20, 1 = $1.60, and 1 = 0.50. Starting with $1,000,000, how can you make money in $ and what is the $ profit