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Quantitative Aptitude :: Time and Work Problems And Answers


Time and Work Formulaes

Quantitative Aptitude
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21. P can complete work in 12 days working 8 hrs a day. Q can complete the same work in 8 days working10 hrs a day. If both P and Q working 8 hrs a day in how many days can they complete the work?
A. 5 6/11 B. 6 5/11   
C. 5 5/11    D. 6 6/11
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22. A and B can do a piece of work in 72 days; B and C can do it in 120 days; A and C can do it in 90 days In what time can A alone do it?
 
A. 80 B. 100
C. 120 D. 150
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23. A and B can do a piece of work in 5 days; B and C can do it in 7 days and A and C can do it in 4 days who among these will take least time if put to do it alone?
A. A B. B
C. C D. data inadequate
 
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24. A can do a piece of work in 4hrs.B and C together can do it 3 hrs while A  and C can do it in 2 hrs how long it will take for B?
 
A. 8 B. 10
C. 12 D. 24
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25. A can do piece of work in same time in which B and C together can do it. If A and B together could do it in 10 days and C alone in 50 days then B alone could do it in?
A. 15 B. 20
C. 25 D. 30
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26. A is thrice good a workman as B and therefore is able to finish a job in 60 days less than B. Working together they can do it in?
 
A. 20 B. 22 ½
C. 25   D. 30
 
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27. A is 30% more efficient than B. How much time will they working together take to complete a job which A alone could have done in 23 days?
A. 11 B. 13     
C. 20 3/17           D. None of these
 
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28. A can do a work in 15 days and B in 20 days. If they work on it together for 4 days then the fraction of the work that is left is?
 
A. 1/4  B. 1/10      
C. 7/15     D. 8/15
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29. X can do a piece of work in 40 days. He works at it for 8 days and then Y finished it in 16 days how long will they work together take to complete the work?
 
A. 13 1/3 B. 15
C. 20 D. 56
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30. A alone can complete a work in 16 days and B alone can complete in 12 days. Starting with A they work on alternate days. The total work will be completed in?
 
A. 12  B. 13
C. 13 5/7       D. 13 ¾
 
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Who are all can get the advantages from this Time and Work Question and Answers section?

Those are all planning for any competitive examinations can use this segment to enhance their abilities.

  • L.I.C/ G. I.C Competitive Exams
  • Career Aptitude Test (IT Companies) and etc.
  • Defence Competitive Exams
  • Common Aptitude Test (CAT)
  • UPSC Competitive Exams
  • Bank Competitive Exam
  • SSC Competitive Exams
  • Railway Competitive Exam
  • University Grants Commission (UGC)