Answer:
Borrow in dollars then at spot rate convert money to british pound. Invest in the pounds for half a year and convert back to dollars.
Step-by-step explanation:
Access to credit = $20000000
We do a conversion to pounds
= 20000000/2
= £10000000
When this is invested for 6 months
10000000 x 1 +4% x6/12
= 10000000(1+0.04*0.5)
= 10000000x1.02
= 10200000
We then make a conversion back to dollars
10200000 x 2.2
= 22,440,000 dollars
Loan to be repaid
20000000(1+6%x6/12)
= 20000000 x 1 +0.06*0.5
= 20000000 x 1.03
= 20,600,000
Then arbitrage profit = 22440000 - 20600000
= 1840000