please show all work and do not use excel. ignore the answer and work shown it was not correct.

6. Marianna decided not to purchase the bond in problem #5. Instead she paid S878 for a $1,000 face value bond that provides coupons of $50 every half year for the 10 year maturity period. The annual ROR she is set to earn on the investment is closest to a) 5.4% b) 62% c) 7.3% 1800 10.196 e) 10.5% f) 11.9% g) 12.1% h) 12.7% i) 13.3% j) greater than 13.3%