Equation of Payments.
Equation of Payments is the process of finding when two or more sums due at different times may be paid at once, without loss to debtor or creditor. The time for such payment is called the equated time.
To equate two or more payments, multiply each payment by its time, and divide the sum of the products by the sum of the payments.
The times of the several payments must be in the same denomination, and this will be the denomination of the answer.
Less than 1/2 day is rejected; 1/2 day or more counts as 1 day. If the date is required, reckon the equated time forward from the given date.