Consider the following five different lock box arrangements:

Float Reduction,

Opportunity

Annual

Bank Fee

Arrangement

in Days

Cost per Year

Collections

for Lockbox

A

3

10%

$1,000,000

$500

B

5

10%

1,000,000

600

C

5

10%

1,000,000

1,500

D

4

12%

500,000

500

E

3

5%

1,200,000

500

a. For each arrangement, calculate the benefits from using the lock box system.

b. Considering the bank fee for each arrangement, which lock box systems are attractive?