Joseph KK Ho's work diary

ABC Ltd is a small factory which makes two components, C1 and C2. It has the following constraints on weekly production: Operative time 240 staff hours Raw material A 500 kg Raw material B 400 litres C1 uses two staff hours, 5 kg of A and 5 litres of B to make each unit. C2 uses three staff hours, 5 kg of A and 4 litres of B to make each unit. The contributions to profit from each unit of C1 and C2 are $150 and $100, respectively. It is known that all production can be sold. Requirements 1. Represent the above situation as a linear programming model, if the object is to maximise total weekly profit. (Demote the units of C1 and C2 produced each week by X1 and X2 respectively.) (5 marks) 2. Show the constraints from (1) above on a graph and indicate the feasible region. (7 marks) 3. Determine the product mix which will maximise weekly profit, and the maximum weekly profit, in (1) above. (7 marks) 4. State two limitations of linear programming. (6 marks) (Tot...

A few SMA students explicitly demand to do more exercises in class; in this case, pls bring along the SMA exercises and answers (hardcopies) and textbook next week so that we will spend half of the lecture next week to do exercises in class; in this case, I will spend half of the time doing lecturing; and the other half doing exercises. [i.e. Oct 21 onward]

A factory has 4 work centres WC A: 160 units/ hour , followed by WC B: 135 units/ hour, followed by WC C: 80 units/ hour, followed by WC D: 189 units/ hour. --> WC A--> WC B--> WC C--> WC C--> Product selling price is $100 per unit Variable cost per unit is $60 per unit (mainly direct material cost) Monthly period cost is $1,000 per month. Total Assets employed is $20,000. a. What is the overall output rate of the whole system? b. What is the monthly rate of return of the whole system? Questions 1. Spend $400 to improve output rate per month of WC A to 200 units/ hour 2. Spend $600 to improve output rate per month of WC B to 150 units/ hour 3. Spend additional cost of $10 per unit to outsourcing processing of work of WC C to vendor ABC for processing 40 units. 4. Spend $100 to improve output rate of WC C to 110 units/ hour 5. Work centre C spoilt 4 units in production, what is the total loss to the factory? 6. Work centre A spoilt 3 units in p...

Customer Perspective: Customer satisfaction, customer retention rate, account share; market share; no. of customer complaints Learning and growth: Staff turnover, employee loyalty; employee satisfaction; no. of hours on training and development Internal processes Ontime delivery % of sales order; set-up time; rate of establishing new distribution channels; rework amount; manufacturing lead time

Exercises on Fixed Asset depreciation and disposal Mi Mi opens an Ice cream store; she purchase a refrigerator for $6,500 which has an economic life of 10 years. She adopts the straightline method to depreciate the fixed asset of refrigerator. She expects that the refrigerator will have a disposal value of $500 at the end of its economic life. Tasks 1. Calculate the depreciation and net book value of the refrigerator at the end of year 1 and year 2; show the respective double entries. 2. At mid-year 3, Mi Mi decides to retire; she sells the refrigerator at $$700. Calculate the profit/loss on the disposal of the refrigerator, and show the respective double entries. 3. Try to perform task 1, using reducing balance method for year 1 and year 2.

Task 1 David runs a store that sells apples. The cost of apple is $25 each; David intends to sell apples at $40 each. Each month, David needs to pay rental of $5,000 and his salary at $6,000. Questions: Q1. How many apples does David needs to sell in order to break even? Q2. How many apples does David needs to sell in order to earn a monthly profit of $2,000? Q3. If David wants to sell 50 apples and still intends to break even, how much should David charge per apple in order to break even?

Exercise - LA Ducks Ltd. Jan. Linda and Ada are sisters; they open a retail store to sell rubber ducks in Jan. 2013. The retail store is called LA Ducks Ltd. Both girls put in $20,000 to the business. They deposit the money in the company's bank account. Then, they purchased some furniture at $5,000. Their mother lend them $10,000 as long-term loan. To start their business, they purchase 500 rubber ducks from Mainland at the cost of $20; they intend to sell the rubber duck at $200 each. Before they start to sell the rubber ducks, Linda decides to give 2 ducks to her boyfriend as his birthday gift. Ada agree to charge Linda at cost of $20 each in this case. Feb. LA Ducks Ltd invites Andy Lau to attend the opening ceremony of their store and agree to pay Andy $1,000 as promotional fee. In Feb., LA Ducks are able to sell 200 ducks; however, they also found that 3 rubber ducks are deformed, which need to be written off. Their mother then ask them to pay $100 as interest charge ...

The following infomation is on GW Electronic Commerce workshop, Oct 2013 Assessment method: 1 assignment [no exam] Lecture 1 topics: eCommerce/ eBusiness definition(s) eCommerce practices Sustainable competitive advantage Critical Success Factors ******* Macro-environment: PEST analysis Micro-environment: 5-Force Model References Previous workshop resources Facebook forum on IT Videos on ecommerce