A credit union pays 4% interest compounded quarterly on $2000 deposited for 1 year, resulting in over $2080 in the account. A rate of 8% compounded continuously on $2000 for 1 year yields over $2160. Bank C offers the best money market rate at 4.9% compounded continuously compared to 5% compounded monthly at Bank A and 5.04% compounded quarterly at Bank B. An investment will double in 6 years with an annual rate of 8% compounded quarterly or in 12 years with 6% compounded continuously, and will triple in 12 years with 6% compounded continuously.