10. $500 per month invested at 5%, compounded monthly, for 20 years; then $1000 per month invested at 8%, compounded monthly, for 20 years.

10. $500 per month invested at 5%, compounded monthly, for 20 years; then $1000 per month invested at 8%, compounded monthly, for 20 years. 10. $500 per month invested at 5%, compounded monthly, for 20 years; then $1000 per month invested at 8%, compounded monthly, for 20 years