Jhon, Mona and Gordon, three US based business partners, jointly invested in a business project to supply nuclear fuel to India. As per their share in the investment, Gordon will receive 2/3 of the profits whereas Jhon and Mona divided the remainder equally. It is estimated that the income of Jhon will increase by $ 60 million when the rate of profit rises from 4% to 7%. What is Mona's capital ?