Binita contributed property with a basis of $40,000 and a value of $50,000 to the BE partnership in exchange for a 20% interest in partnership capital and profits. During the first year of partnership operations, BE had net taxable income of $30,000 and tax-exempt interest income of $10,000. The partnership distributed $10,000 cash to Binita. What is Binita's adjusted basis (outside basis) for her partnership interest at year-end?