Operations Management

02 Jul


Bloomsday Outfitters produces T-shirts for road races. They need to acquire some new stamping machines to produce 30,000 good T-shirts per month. Their plant operates 200 hours per month, but the new machines will be used for T-shirts only 60 percent of the time and the output usually includes 5 percent that are “seconds” and unusable. The stamping operation takes 1 minute per T-shirt, and the stamping machines are expected to have 90 percent efficiency considering adjustments, changeover of patterns, and unavoidable downtime. How many stamping machines are required?



In the table given below the Distribution Manager is expected to service these DCs as per the demands placed. If the actual sales after completing week one is as follows, what would be the quantities that would need amendment as far as Distribution Manager is concerned to service for week two and onwards?

After week one the actual sales to Forecasted sales for week one ratio is as under: Mumbai did 80 % of forecast, Lucknow did 75 % of forecast Kolkata did 60 % of week one forecast Chennai did 125 % of forecast and Delhi did 150 % of week one forecast

  Mumbai Chennai Lucknow Delhi Kolkata
Op Bal 120 350 270 250 350
Safety Stocks 60 125 150 100 200
Min Order Qty 80 200 200 100 300
Lead time wks 1 2 3 2 3
Transit         300
Sales Forecast          
Week 1 50 100 150 50 100
Week 2 35 75 100 75 150
Week 3 55 125 150 80 200
Week 4 65 100 200 55 135
Week 5 80 200 300 75 125
Week 6 125 150 200 80 165
Week 7 50 100 100 90 200

Note: Kolkata will receive transit stocks in week 2.



After working for 30 years, Ramjee Somjee Dutt opted for VRS and started a courier company and did very well in the first four years. He was now looking for expansion of his business and decided to venture into Road transportation business between Chennai and Mumbai and Mumbai and Delhi as he felt that he could do well on this line. However before taking a final decision he hires your Management Consultant firm formed by yourself. He has requested you to work out the Price to quote his clients for these two routes considering the costs involved. He expects to earn a minimum profit of Rs 1000 per day per truck after meeting all expenses. Your analysis of market conditions tell you the following:

Vehicle cost Rs 7 lacs Depreciation 15 % Maintenance costs per day Rs 150 Drivers monthly Salary Rs 5000 : Attendants monthly salary Rs 3000 . Misc expenses Rs 200 per day. Driver allowance is Rs 125 per day and attendant gets Rs 75. Diesel cost per liter is Rs 25 and the vehicle gives an average mileage of 4 km to a liter. The Financial institutions offer loans at 10 % interest pa, which Ramjee has been negotiating. It has been observed that on an average the vehicle covers 400 km per day. The distance between Mumbai to Delhi is 1500 km and Mumbai to Chennai is 1350 km. The driver gets rest day in Mumbai only for one day after they return from any trip.



A company is operating in two unrelated businesses. The first one is making common salt, which is sold in one-kilogram consumer packs. The second business is making readymade garments. The owner of the businesses has decided to implement Materials Requirement Planning (MRP) in one of the two businesses, which is likely to give him greater benefit. Assuming that the current turnover and profits of both the units are comparable, compare the relative benefits and limitations of Materials Requirement Planning (MRP) for these two businesses.



A Manufacturer of motorcycles buys spark plugs at Rs.15 each. Now he wishes to manufacture the plugs in his own factory. The estimated cost for the manufacture of spark plugs is around Rs.50,000=00 and the variable cost comes to Rs.5 per spark plug. The Production Manager advises the Manufacturer that the factory should go for manufacturing instead of procuring them from the open market.

List out reasons for the decision of the Production Manager backed up by the necessary data.

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