Time and Work
Time and Work - Important Points
| 6. | A and B can do a piece of work in 7 days. With the help of C they finish the work in 5 days. C alone can do that piece of work in? |
|---|
A. 7/2 days
B. 7 days
C. 35/2 days
D. 10 days
View Answer Discuss Work SpaceAnswer: option c
Explanation:
Let total work = LCM (7,5) = 35 unit
In 1 day, A and B does 5 unit work.
In 1 day, A, B and C does 7 unit work.
In 1 day, C alone does (7 - 5) = 2 unit work.
C alone can complete it in = 35/2 days
| 7. | A and B together can do a piece of work in 12 days, B and C together in 15 days, C and A together in 20 days. In how many days will they all finish it together? |
|---|
A. 8
B. 5
C. 10
D. 6
View Answer Discuss Work SpaceAnswer: option c
Explanation:
Let total work = LCM (12,15,20) = 60 unit
In 1 day, A and B does 5 unit work.
In 1 day, B and C does 4 unit work.
In 1 day, A and C does 3 unit work.
Adding the above 3, In 1 day, A, B and C does (5 + 4 +3)/2 = 6 unit work.
Working together, time taken to complete it = 60/6 = 10 days.
| 8. | A and B can do a piece of work in 4 days, while C and D can do the same work in 12 days. In how many days will A, B, C and D do it together? |
|---|
A. 8 days
B. 4 days
C. 3 days
D. 2 days
View Answer Discuss Work SpaceAnswer: option c
Explanation:
Let total work = LCM (12,15,20) = 60 unit
In 1 day, A and B does 5 unit work.
In 1 day, B and C does 4 unit work.
In 1 day, A and C does 3 unit work.
Adding the above 3, In 1 day, A, B and C does (5 + 4 +3)/2 = 6 unit work.
Working together, time taken to complete it = 60/6 = 10 days.
| 9. | Advika and Billy can do a piece of work in 45 days and 40 days respectively. They began the work together but Advika leaves after some days and then Billy completed the remaining work in 23 days. The number of days after which Advika left the work was: |
|---|
A. 6
B. 8
C. 9
D. 12
View Answer Discuss Work SpaceAnswer: option c
Explanation:
Let total work = LCM (45,40) = 360 unit
In 1 day, Advika does 8 unit work.
In 1 day, Billy does 9 unit work.
In 1 day, Advika and Billy does (8 + 9) = 17 unit work.
Work completed by Billy in 23 days = 23 x 9 = 207 unit
Work done by them together in = (360 - 207)/17 = 153/17 = 9 days
So, Advika left after 9 days.
| 10. | Advik and Billu can do a piece of work in 25 days and 20 days respectively. They began the work together but Advik leaves after some days and then Billu completed the remaining work in 11 days. The number of days after which Advik left the work was: |
|---|
A. 9
B. 7
C. 6
D. 5
View Answer Discuss Work SpaceAnswer: option d
Explanation:
Let total work = LCM (25,20) = 100 unit
In 1 day, Advik does 4 unit work.
In 1 day, Billu does 5 unit work.
In 1 day, Advika and Billu does (4 + 5) = 9 unit work.
Work completed by Billu in 11 days = 11 x 5 = 55 unit
Work done by them together in = (100 - 55)/9 = 45/9 = 5 days
So, Advik left after 5 days
Time and Work Questions and Answers FAQ
Read FAQWhy do I need to learn Time and Work Questions with Answers in Quantitative Aptitude?
Time and Work is an important topic of Quantitative Aptitude. MCQ type Questions with Answers of Time and Work are required to build your Quantitative Aptitude skills which is a prerequisite for your Career development.
How Time and Work MCQ type Questions with Answers is helpful in my Career?
The Quantitative Aptitude MCQ type Questions with Answers based on "Time and Work" will help you improve your skills in order to face the interviews, crack Campus recruitment tests and various other competitive examination such as CAT, GATE, GRE, MAT, Bank Exam, Railway Exam etc. with full confidence.
What is the best way to prepare for Time and Work Questions with Answers?
First, go through the basic concepts related to Time and Work. Be ready with all Important Points of Time and Work. Then, attempt questions. Besthai.in provides you lots of fully solved Time and Work MCQ type questions and answers with explanation. It will help you to grasp the whole topic Time and Work in the easy way.
How this online resource is helpful in my preparation for Time and Work Questions and Answers?
Besthai.in provides lots of fully solved MCQs of Time and Work. You can study all important points related to Time and Work. You can also take Online Test to check your preparation for Time and Work in Quantitative Aptitude.