Answer:
Japan Interest Rate = 0.15%
Explanation:
As per Interest Rate Parity Theory
Spot Rate : 1$ = 100
Forward Rate : 1 $ = 110
r = 9/12
As per interest rate parity, forward rate = Spot rate(1+Interest rate Japan)/(1+Interest rate US)
Forward rate = Spot rate *(1+ iD)/(1+iF)
110 / 100 = (1 + Japan Interest Rate * 9 /12) / 1.01125
1.1 * 1.01125 = 1 + Japan Interest Rate * 0.75
1.112375 = 1 + Japan Interest Rate * 0.75
Japan Interest Rate * 0.75 = 1.112375 - 1
Japan Interest Rate * 0.75 = 0.112375
Japan Interest Rate = 0.112375 / 0.75
Japan Interest Rate = 0.15%