## Mr. Ram Naresh has six jobs waiting to be processed through his machine. Processing tiime (in days) and due date information for each job are as follows :

 Job Processing Time Due Date A 2 3 B 1 2 C 4 12 D 3 4 E 4 8 F 5 10

Sequence the jobs by FCFS, SPT, SLACK and DDATE.

Calculate the average completion time and average tarbiness of the six jobs under each sequencing rule. Which rule would you recommend ?

## Clean and shine car services has five cars waiting to be wahsed ans waxed. The time required (in min) for each activity is given below. In what order should the cars be processed through the facility ? When will the batch of cars be completed ?

 Car Wash Wax 1 5 10 2 7 2 3 10 5 4 8 6 5 3 5

X

## Complete the following MRP matrix for item X:

 Item: X LLC:1 LT : 2 Let size : min 50 1 2 3 4 5 6 7 8 Gross Requirement Scheduled receipts Project on hand (10) Net Requirement Planned order receipts planned order releases 20 30 50 50 50 60 90 40 60

In what perios orders be released and what should be the size of these orders ?

## The annual cost data of an enterprises for the year 2008-09 are as follows :

Fixed cost = 5,00,000

Annual sales volume = 15,00,000

Input variable cost per unit Rs. 25

Unit sales price Rs. 150

Determine (i) Break even point (ii) 18,00,000 will be taken likely sales volume for the next budget period. Calculate the estimated contribution and profit. (iii) If a profit of Rs. 7,50,000/- has been budgeted compute the sales volume required.

## A manufacture has the following information on its major product.

Regular time production capacity = 2600 units/period

Overtime production costs = Rs. 12/unit

Inventory costs = Rs. 2 unit/period

Backlog costs = Rs. 5/unit/period

Beginning inventory  = 400 units

Demand (in units) for period 1,2,3,4 is 4000 , 3200, 2000 and 2500 respectively. Develop a level output plan that filed zero inventory at the end of period 4, What costs result from this plant ?