
Answer:
The Marston Corp. disbursement float is  $ (16,768.00)
Explanation:
The firm writes 28 checks a day for an average amount of $398 each, is equal to say = 28 * $398 = Â $ 11,144.00 . If these checks generally clear the bank 3 days after they are written, then = Â $ 11,144.00 * 3 = Â $ 33,432.00
And, the firm generally receives 40 checks with an average amount of $502 each, is equal to say = 40 * $502 = Â $ 20,080.00 . If the deposited amounts are available after an average of 2.5 days, then = $ 20,080.00 Â * Â 2.5 = Â $ 50,200.00
The Marston Corp. disbursement float is  = $ 33,432.00  -  $ 50,200.00 =
$ (16,768.00)