Problem:
Suppose that six-month interest rates (annualized) in Japan and the United States are 7 percent and 9 percent, respectively. If the spot rate is ¥142:$1 and the ninety-day forward rate is ¥139:$1 and the 180 day forward rate is : ¥152:$1
Which would be the best to invest in, where would be the best to borrow from?