Please login

Prime

Prepinsta Prime

Video courses for company/skill based Preparation

(Check all courses)
Get Prime Video
Prime

Prepinsta Prime

Purchase mock tests for company/skill building

(Check all mocks)
Get Prime mock

Work and Time Questions and Answers

Work and Time Questions

Formula

Definition of Work and Time

Time and Work questions are most commonly asked questions in the section of quantitative aptitude found in the competitive examinations. In order to solve these questions without confusion wasting any time, you must have thorough knowledge of the concept of Time and Work subject as well as some rules and methods may help you further to tackle the time frame. A very simple idea of time and work is that more individuals complete the work in less significant time, besides less number of people take much more time to complete the work. Additionally, a key perception that is referred in time work questions is the collective effectiveness of two or more people. For the questions based on time and work, the speed at which a person or machines operate solely are generally specified, as well as it is important to figure the speed at which they can work collaboratively or vice versa.

Rules

  • If M1 number of individuals are able to complete W1 amount of work within D1 days whereas M2 number of people are able to complete W2 amount of work in D2 days, then the formula used will be: M1D1/W1 = M2D2/W2
  • If the individuals are having productivity of E1 and E2 individually, then the formula used to calculate the same will be: M1D1T1E1/W1= M2D2T2E2/W2
  • If person A is able to do a part of work in ‘n’ number of days, then the work done by A in a single day is equals to 1/n
  • If person A might complete an amount of work in D1 number of days as well as person B is able to complete the similar amount of work in D2 number of days then person A and person B together can do the similar type of work in: (D1*D2)/ (D1+D2)
  • Considering that person A is double as worthy a worker as person B, then person A would be taking half of the time occupied by person B to do a similar amount of work.
  • If person A along with person B can collaboratively complete a part of work in D1 number of days as well as person A unaccompanied is able to complete it in D2 number of days, then person B can alone complete the work in: (D1*D2)/ (D2-D1)

Question 1

Time: 00:00:00
Sam can finish a task is 12 days, and Adam can finish it in 15 days. Calculate how much time together they will take to complete the same job?

20/3

20/3

16/3

16/3

9/2

9/2

18/7

18/7

Once you attempt the question then PrepInsta explanation will be displayed.

Please login to submit your explanation

Start

Question 2

Time: 00:00:00
Max and Samantha can together finish the project in 12 days. If Samantha alone takes 30 days to complete, then calculate the days in which Max will finish the project alone?

25

25

20

20

16

16

19

19

Once you attempt the question then PrepInsta explanation will be displayed.

Please login to submit your explanation

Start

Question 3

Time: 00:00:00
George and Victor can finish making a painting in 12 hours, Victor and Sam in 15 hours, Sam and George in 20 hours. Find in how many hours will they together finish the painting?

21

21

10

10

21/2

21/2

11

11

Once you attempt the question then PrepInsta explanation will be displayed.

Please login to submit your explanation

Start

Question 4

Time: 00:00:00
Mary is three times as good as Jonny. If they finish a task together in 15 days, calculate the days taken by Mary alone to complete the work.

20

20

25

25

30

30

17

17

Once you attempt the question then PrepInsta explanation will be displayed.

Please login to submit your explanation

Start

Question 5

Time: 00:00:00
M can do a task in 25 days, and S can finish a similar job in 20 days. They work as one for five days and M goes away. Calculate the days required by S to do the work then?

12

12

11

11

17

17

21.5

21.5

Once you attempt the question then PrepInsta explanation will be displayed.

Please login to submit your explanation

Start

Question 6

Time: 00:00:00
Max can finish writing one chapter in 2 days. While Alex can do the same chapter in 5 days, calculate the number of days taken them together to complete the chapter?

5/9

5/9

1/2

1/2

10/7

10/7

8/11

8/11

Once you attempt the question then PrepInsta explanation will be displayed.

Please login to submit your explanation

Start

Question 7

Time: 00:00:00
Jack is three times as good as Rose. Jack can finish a task in 60 days less than Rose. Calculate the time in which they can complete the job together.

\frac{43}{3}

\frac{43}{3}

\frac{45}{2}

\frac{45}{2}

\frac{47}{2}

\frac{47}{2}

\frac{49}{2}

\frac{49}{2}

Once you attempt the question then PrepInsta explanation will be displayed.

Please login to submit your explanation

Start

Question 8

Time: 00:00:00
Mike and Nik can finish a project in 45 days and 40 days individually. Both of them started the project together, but Mike quits subsequently by some days, and Nik finishes the outstanding in 23 days. Find in how many days Mike quits?

8/3

8/3

7/2

7/2

9

9

9/5

9/5

Once you attempt the question then PrepInsta explanation will be displayed.

Please login to submit your explanation

Start

Question 9

Time: 00:00:00
Jack and Vinny can finish their target in 12 days. Vinny and Sid together can complete the goal in 15 days. If Jack is twice as good as Sid, calculate the number of days required by Vinny alone to finish the target?

21

21

22

22

25/2

25/2

20

20

Once you attempt the question then PrepInsta explanation will be displayed.

Please login to submit your explanation

Start

Question 10

Time: 00:00:00
Ross and Sam can finish an assignment in 15 days together. Ross can complete this Assignment alone in 20 days. Calculate the days taken by Sam to do the same assignment alone?

25

25

60

60

30

30

33

33

Once you attempt the question then PrepInsta explanation will be displayed.

Please login to submit your explanation

Start

Question 11

Time: 00:00:00
Adam, Ben, and Cherry can harvest a plot in 10, 15, and 30 days, respectively. How many days will Adam take to finish the same work if he is assisted by Ben and Cherry every 5’th day?

10

10

25

25

19

19

21

21