Class 8 Work Efficiency Case Study Worksheet with Solutions
The Class 8 Work Efficiency Case Study Worksheet with Solutions helps students understand how efficiency affects the time needed to complete work. Moreover, it explains each step clearly, making complex calculations easier to follow. These case studies strengthen basic concepts through practical examples.
Why This Worksheet Improves Understanding
This worksheet enhances analytical skills and builds confidence. Furthermore, each question includes well-structured explanations. As a result, students learn to compare work rates and calculate efficiency accurately.
How Students Should Practice
Learners should identify work ratios, apply formulas, and solve problems gradually. Additionally, consistent practice helps increase accuracy while improving conceptual clarity in work efficiency.
Case Study 2: Work Efficiency and Speed, Distance, Time
Neha runs a neighborhood distribution center that receives orders from several shops once a week. On a particular Saturday she received a single large consignment of **540 identical food packets** that must be packed and labelled before the delivery trucks start at night. She assigns three workers for packing: **Amit**, **Binita** and **Chirag**. Based on past records **Amit can pack 18 packets per hour**, **Binita can pack 12 packets per hour** and **Chirag can pack 6 packets per hour**.
They begin work together at 9:00 a.m. After working together for some hours Chirag has to leave to attend a family emergency; Amit and Binita continue until the entire consignment is ready. Once packing finishes, Neha personally drives one of the delivery trucks to a nearby city **210 km** away to deliver an urgent portion. Because of variable traffic, she drives the first **70 km** at a steady low speed and then increases her speed for the remaining distance to ensure timely delivery. Students are expected to compute combined work rates, partial work completed, remaining work and time, and to solve the speed-distance-time questions for the journey.
Quiz Results
Total Questions: 5
Correct Answers: 0
Incorrect Answers: 5
Total Marks: 10
Your Score: 0 / 10
Percentage Score: 0%