question 13, could you include formula please

w we comparison date is five months hence. 12. Answer the question in Problem 11 if the comparison date is 11 months hence. 13. A debt of $2,400 due in two months is to be paid by 3 equal payments due three. five, and seven months hence. Money is worth 10%. What is the size of each payment? Let the comparison date be seven months hence. 14. Answer the questions in Problem 13 if the comparison date is two months hence. 15. A woman owes (a) $1,000 due in four months and (b) $3,000 plus interest at 5% due