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Two machines M1 and M2 are able to execute any of four jobs P, Q, R and S. The machines can perform one job on one object at a time. Jobs P, Q, R and S take 30 minutes, 20 minutes, 60 minutes and 15 minutes each respectively. There are 10 objects each requiring exactly 1 job. Job P is to be performed on 2 objects. Job Q on 3 objects. Job R on 1 object and Job S on 4 objects. What is the minimum time needed to complete all the jobs?  
  • a)
    2 hours
  • b)
    2.5 hours
  • c)
    3 hours
  • d)
    3.5 hours 
Correct answer is option 'A'. Can you explain this answer?
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The minimum time needed to complete all the jobs can be calculated by determining the time taken by each job and then finding the maximum time among them.

Step 1: Calculate the time taken by each job
- Job P takes 30 minutes and needs to be performed on 2 objects, so the total time required for job P is 30 minutes * 2 objects = 60 minutes.
- Job Q takes 20 minutes and needs to be performed on 3 objects, so the total time required for job Q is 20 minutes * 3 objects = 60 minutes.
- Job R takes 60 minutes and needs to be performed on 1 object, so the total time required for job R is 60 minutes * 1 object = 60 minutes.
- Job S takes 15 minutes and needs to be performed on 4 objects, so the total time required for job S is 15 minutes * 4 objects = 60 minutes.

Step 2: Find the maximum time among the jobs
The maximum time required among all the jobs is 60 minutes.

Step 3: Convert the maximum time into hours
Since there are 60 minutes in 1 hour, the maximum time of 60 minutes is equal to 1 hour.

Therefore, the minimum time needed to complete all the jobs is 1 hour.
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Two machines M1 and M2 are able to execute any of four jobs P, Q, R and S. The machines can perform one job on one object at a time. Jobs P, Q, R and S take 30 minutes, 20 minutes, 60 minutes and 15 minutes each respectively. There are 10 objects each requiring exactly 1 job. Job P is to be performed on 2 objects. Job Q on 3 objects. Job R on 1 object and Job S on 4 objects. What is the minimum time needed to complete all the jobs? a)2 hoursb)2.5 hoursc)3 hoursd)3.5 hoursCorrect answer is option 'A'. Can you explain this answer?
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Two machines M1 and M2 are able to execute any of four jobs P, Q, R and S. The machines can perform one job on one object at a time. Jobs P, Q, R and S take 30 minutes, 20 minutes, 60 minutes and 15 minutes each respectively. There are 10 objects each requiring exactly 1 job. Job P is to be performed on 2 objects. Job Q on 3 objects. Job R on 1 object and Job S on 4 objects. What is the minimum time needed to complete all the jobs? a)2 hoursb)2.5 hoursc)3 hoursd)3.5 hoursCorrect answer is option 'A'. Can you explain this answer? for Civil Engineering (CE) 2024 is part of Civil Engineering (CE) preparation. The Question and answers have been prepared according to the Civil Engineering (CE) exam syllabus. Information about Two machines M1 and M2 are able to execute any of four jobs P, Q, R and S. The machines can perform one job on one object at a time. Jobs P, Q, R and S take 30 minutes, 20 minutes, 60 minutes and 15 minutes each respectively. There are 10 objects each requiring exactly 1 job. Job P is to be performed on 2 objects. Job Q on 3 objects. Job R on 1 object and Job S on 4 objects. What is the minimum time needed to complete all the jobs? a)2 hoursb)2.5 hoursc)3 hoursd)3.5 hoursCorrect answer is option 'A'. Can you explain this answer? covers all topics & solutions for Civil Engineering (CE) 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Two machines M1 and M2 are able to execute any of four jobs P, Q, R and S. The machines can perform one job on one object at a time. Jobs P, Q, R and S take 30 minutes, 20 minutes, 60 minutes and 15 minutes each respectively. There are 10 objects each requiring exactly 1 job. Job P is to be performed on 2 objects. Job Q on 3 objects. Job R on 1 object and Job S on 4 objects. What is the minimum time needed to complete all the jobs? a)2 hoursb)2.5 hoursc)3 hoursd)3.5 hoursCorrect answer is option 'A'. Can you explain this answer?.
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