CAT Exam > CAT Videos > Quantitative Aptitude (Quant) > Time & Work - 3
Time & Work - 3 Video Lecture | Quantitative Aptitude (Quant) - CAT
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FAQs on Time & Work - 3 Video Lecture - Quantitative Aptitude (Quant) - CAT
| 1. What is the formula to calculate the work done by a person? |  |
Ans. The work done by a person can be calculated using the formula: Work = Rate × Time. Here, the rate is the amount of work done per unit time, and the time is the duration for which the work is performed.
| 2. How do you determine the time taken to complete a task when multiple people are working together? | |
Ans. When multiple people work together, you can calculate the combined work rate by adding their individual work rates. The time taken to complete the task can then be found using the formula: Time = Total Work / Combined Work Rate.
| 3. What is the significance of the concept of 'man-hours' in time and work problems? | |
Ans. 'Man-hours' refers to the total number of hours worked by a person. It is significant because it helps in quantifying the amount of work done. For example, if a task requires 20 man-hours, it can be completed by one person in 20 hours, two people in 10 hours, and so on.
| 4. How can you solve problems involving work and time using ratios? | |
Ans. To solve work and time problems using ratios, first determine the individual work rates of the workers involved. Then, use these rates to set up ratios based on the amount of work each can complete. This allows you to find unknowns such as time taken or work completed.
| 5. What are some common mistakes to avoid when solving time and work problems? | |
Ans. Common mistakes include not converting units correctly, failing to account for total work done, and miscalculating individual work rates. It's important to double-check calculations and ensure that all values are consistent before arriving at a final answer.
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Nov 21, 2024 Last updated |
Video Description: Time & Work - 3 for CAT 2024 is part of Quantitative Aptitude (Quant) preparation.
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