Anne Teak the financial manager of a furniture manufacturer
Solution
a-1. If the lock box makes the cash available 2 days earlier, calculate the net daily advantage of the system.
Average payments each day = 650
Average value of each payment (payment size) = $2,000 per payment
Therefore Average total value of transaction per day = 650 *$2,000 = $1,300,000
Value of two days payments = $1,300,000 *2 = $2,600,000
Cost increased by lock box system daily = 650*$0.40 = $260
As the lock box reduces collection float by $2,600,000
Therefore daily interest saved = $2,600,000 *0.00012 = $312
a-2. Is it worthwhile to adopt the system?
Cost saved (Interest earned on $2,600,000) for 2 days = $2,600,000* {(1+0.00012) ^2 -1} = $624.04
Cost increased by lock box system for two day = 2* 650*$0.40 = $520
Net benefit from lock box system = savings – cost = $624.04 - $520 = $104.04
As the cost is less for the lock boxes than savings therefore it is worthwhile to adopt the system
Yes, it is worthwhile to adopt the system
b. What minimum reduction in the time to collect and process each check is needed to justify use of the lock-box system?
The minimum time will be when the savings are equal to cost.
650* 2000 * days * .012% = 260
Or Days = 260 / 650* 2000 * 0.012%
Or Day = 260 /156 = 1.67 days
This is the minimum reduction in time to justify lock box
Minimum reduction in time 1.67 days
