5. Scenario/Introduction/Background Information :
Cesco Ltd. conducting a study about the durability and power consumption of various bulbs like Sodium vapor, Mercury, Florescent, ordinary bulb and Tube light. For this study the Corporation purchased 10 bulbs in each type and their costs are MYR 12, MYR 17, MYR 20, MYR 7.5 and MYR 16.5. The following table shows the respective durability in hours and power consumption in units. Each unit cost is MYR 1.35.