hi, I'm trying to do this question relating to currency exchanging and hedging, but I'm confused.

if i have 10,000. collectable in 1 years, and i have 10,000 payable in 1 years time, current spot rate are 1.5/ and $1.2/ forward exchange rate are $1.46/and $1.18/.

interest rate per annum are

Money Market Rates:
	Bid (%)	Ask (%)
U.S. interest rate (per annum)	6.10	6.12
U.K. interest rate (per annum)	8.87	9.00
German interest rate (per annum)	8.00	8.05

Options Markets:	Call options ($/)			Call options ($/)
	Strike	Bid	Ask		Strike	Bid	Ask
	1.30	0.040	0.041		1.00	0.035	0.040
	1.40	0.031	0.034		1.10	0.031	0.035
	1.46	0.028	0.030		1.18	0.026	0.030
	1.50	0.021	0.026		1.20	0.020	0.025
	1.60	0.196	0.020		1.30	0.018	0.020

Options Markets:	Put options ($/)			Put options ($/)
	Strike	Bid	Ask		Strike	Bid)	Ask
	1.30	0.003	0.005		1.00	0.020	0.021
	1.40	0.005	0.010		1.10	0.022	0.024
	1.46	0.010	0.020		1.18	0.024	0.029
	1.50	0.020	0.030		1.20	0.029	0.031
	1.60	0.030	0.040		1.30	0.035	0.038

I've found out that the future unhedged position are

Forward position outcome
Future Spot Exchange Rate (ST)	Unhedged Position	Hedged Position	Gains/Losses from Hedge
$1.30	13,000
$1.40	14,000
$1.46	14,600
$1.50	15,000
$1.60	16,000

im trying to understand how to calculate the hedged position, i understand if USD value are going up in the future that i should be using put option since the pound and euro are not worth as much as today, but how do i apply interest rate to these transactions?