Debit calculation

[JefreyC10]

Jhon has two debts to pay, one of $7,000.
maturity in 6 months and another $14,000.00 due from now on
to 1 year. Interest of 48% per annum with monthly capitalization, if
he pays $5,000.00 today, which payment in 9 months will settle
your debt?

 

[jonah2.0]

Beer induced query follows.

Jhon has two debts to pay, one of $7,000.
maturity in 6 months and another $14,000.00 due from now on
to 1 year. Interest of 48% per annum with monthly capitalization, if
he pays $5,000.00 today, which payment in 9 months will settle
your debt?

What have you done so far?