In three years, you want to travel to Europe which you expect to cost $10,000 at that time. You have deposited $5,000 in a Certificate of Deposit that pays 6% interest annually and will mature in three years. You also have a rich aunt who will give you an investment which pays 10% annual returns that will make up the balance of the $10,000 not paid for by the CD. How much must you aunt invest today?