Logan owes money to his jacket guy friend. There are payments of $600 that was due eight months ago and $850 due two months ago were not made. Now Logan has proposed to ends-means by two future payments that provide for a 7.5% compounded annually rate of return to his jacket guy friend on the missed payments. The first payment will be made in two months. The second payment, twice as large as the first, will be made in six months. Determine the amount of each payment.