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Quantitative Aptitude :: Time and Work Problems And Answers


Time and Work Formulaes

Quantitative Aptitude
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41. A cistern can be filled by 3 pipes in 30, 40 and 60 min and emptied by an escape pipe in half an hour the 3 taps are turned on at noon but the escape pipe is at the same  time accidentally left open and not closed for a quarter of an hour at what time will the cistern be full?
 
A. 60 min B. 90 min
C. 120 min D. 150 min
 
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42. A machine P completes a certain amount of  work in 12 hrs and machine Q completes the same work in x hrs if both machines works together to complete the same work in 8 hrs then what is x?
 
A. 12 hrs B. 18 hrs
C. 24 hrs D. 32 hrs
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43. 2 pipes P1 and P2 together can fill a tank in 6 hrs and P3 alone can fill the tank in 10 hrs if they work together what is the time taken to fill the tank?
 
A. 7/4 hrs B. 9/4 hrs
C. 13/4 hrs  D. 15/4 hrs
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44. If it takes a hrs for x to repair 1 machine and b hrs for y to repair 1 machine then how many hrs will they take to repair 750 machines if they work together?
 
A. 750 × ab/(a+b) B. 750 (a+b)/ab
C. 750 ab  D. 750/(a+b)
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45. James can finish a job in 20 dasy he worked for 10 days alone and completed the remaining part working with David 2 days how many days would both David and James together take to complete the entire job?
A. 4 B. 5
C. 10 D. 12
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46. A can do piece of work in 15 days and B in 20 days they finished the work with the assistance of c in 5 days and got Rs.45 as their wages find the share for each in wages?
 
A. 11,12,13 B. 15,11,13
C. 15,11.25,18.75  D. 11,15.25,18.75
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47. A and B together can do a piece of work in 6 days and A alone can do it in 9 days. In how many days can B alone can do it?
 
A. 12 days B. 15 days
C. 18 days D. 21 days
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48. A person P takes 4 hrs time to complete a job and Q takes 6 hrs to complete the same job if they work together how much time will they require to complete the job?
 
A. 1.2 hrs B. 1.8 hrs 
C. 2.4 hrs D. 3.0 hrs
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49. P can do a piece of work in 18 days and Q can do in 22 days, with the help of C, they finish the work in 6 days. How long will it take R to finish the work? 
A. 17days B. 18days
C. 16 ½ days      D. 17 ½ days
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50. Charan can do a piece o work in 24 days, which Hari alone can finish in 19 days. Both together work for 7 days and then Hari leaves off. How many days will Caran take to finish remaining work?
A. 22days B. 22 ½ days
C. 21 ½ days      D. 20days          
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Related Topics

Partnership
Simple Interest
Profit and Loss
Decimal Fractions
Square Root and Cube Root
Time and Distance



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

  • L.I.C/ G. I.C Competitive Exams
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