Class 8 Time and Work Case Study Questions with Answers

Class 8 Time and Work Case Study Questions with Answers

Class 8 Time and Work Case Study Questions with Answers help students understand how work rate and time relate in real-life situations. Moreover, these case studies explain each step clearly, allowing learners to understand the method easily. This makes the topic more practical and engaging.

Why These Case Studies Are Useful

These worksheets strengthen conceptual understanding and improve accuracy. Furthermore, the detailed answers help students apply formulas correctly. As a result, learners gain confidence and develop better analytical skills for exams.

How to Practice Effectively

Students should analyze the data, identify work rates, and calculate time step by step. Additionally, regular practice builds speed and enhances overall mathematical reasoning.

Case Study 1: Time and Work; Speed, Distance, and Time

Rohan runs a small delivery service in his town. He has three delivery boys: **Amit**, **Bilal**, and **Charan**. Each of them works at a different efficiency level. Amit can complete a full packing and loading task in **12 hours**, Bilal in **8 hours**, and Charan in **6 hours**. Rohan usually assigns tasks depending on workload and deadlines. One day, he received a bulk order of **96 identical packages** that needed to be packed and dispatched before evening. To complete the task faster, he allowed all three workers to work together for some time. Later in the afternoon, Charan had to leave for another urgent assignment, and only Amit and Bilal continued working. After completing the packaging, Rohan himself drove the loaded vehicle to a nearby city located **180 km** away. The travel route had mixed traffic conditions. He drove the first **60 km** at a constant speed, then increased his speed for the remaining part of the journey to ensure that the delivery was made on time. The case requires students to understand concepts of work efficiency, combined work rate, time allocation, and speed-distance-time calculation in a real-life scenario.

MCQ Questions

  1. 1. While working together, what is the combined rate of Amit, Bilal, and Charan (in packages per hour), if 12 hours, 8 hours, and 6 hours are required to complete the same task individually?

  2. 2. If all three worked together for 2 hours, how many packages did they complete?

  3. 3. After Charan left, Amit and Bilal continued the work. What is their combined rate (in units of work per hour)?

  4. 4. Rohan drove the first 60 km at 40 km per hour. How much time did he take for this part?

  5. 5. To complete the total 180 km journey on time, Rohan drove the remaining 120 km in 2 hours. What was his speed for the second part?

Quiz Results

Total Questions: 5

Correct Answers: 0

Incorrect Answers: 5

Total Marks: 10

Your Score: 0 / 10

Percentage Score: 0%


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