1. How much longer will it take to pay off a $210,000 loan with monthly payments of $2100 than with monthly payments of $2200? The interest rate on the loan is 11.20% compounded monthly. (Do not round intermediate calculations and round up the number of payments, n, to the next whole number.)

2. How long will $560,000, in an investment account that earns 4.15% compounded monthly, sustain month-end withdrawals of $3500? (Do not round intermediate calculations and round up the number of payments, n, to the next whole number.)

3.

Regular investments made at the beginning of each quarter earn 7% compounded quarterly.

How many more $1000 investments than $1100 investments will it take to accumulate $82,000? (Do not round intermediate calculations and round up the number of investments.)

Marions grandfathers will established a trust that will pay her $3000 every three months for 12 years. The first payment will be made five years from now, when she turns 20. If money is worth 8% compounded quarterly, what is todays economic value of the bequest? (Do not round intermediate calculations and round your final answer to 2 decimal places.)