I r C m 1 Period P R 1 i i 2333 2'33: . 240 4430 4 3 4000 6.0% 240 4720 5 4 4000 6.0% 240 4960 6 5 4000 6.0% 240 5200 7 6 4000 6.0% 240 5440 8 7 4000 6.0% 240 5680 9 s 4000 6.0% 240 5920 10 9 4000 6.0% 240 6160 11 10 4000 6.0% 240 6400 12 11 4000 6.0% 240 6640 13 12 4000 6.0% 240 6880 14 13 4000 6.0% 240 7120 15 14 4000 6.0% 240 7360 16 15 4000 6.0% 240 7600 17 16 4000 6.0% 240 7840 13 17 4000 6.0% 240 8080 19 18 4000 6.0% 240 8320 20 19 4000 6.0% 240 8560 21 20 4000 6.0% 240 8800 J J Adjust the rate in the table above until you get an amount of exactly $7080 after 20 periods