While Preparing for Entrance Aptitude Exams, questions on Time and work are asked frequently. Here the concepts and formulas should be understood well.
We have provided the selective and important Time and work questions and answers for various Aptitude tests and competitive exams. Try to solve maximum questions to increase your performance in exams.
Time and Work Questions With Answers
Q1) P is able to do a piece of work in 15 days and Q can do the same work in 20 days. If they can work together for 4 days, what is the fraction of work left?
Q2) P, Q and R can do a work in 20, 30 and 60 days respectively. How many days does it need to complete the work if P does the work and he is assisted by Q and R on every third day?
A) 15 days
B) 9 days
C) 10 days
D) 14 days
Q3) To complete a piece of work A and B take 8 days, B and C 12 days. A, B and C take 6 days. A and C will take :
A) 7 Days
B) 7.5 Days
C) 8 Days
D) 8.5 Days
Q4) A can do a particular work in 6 days. B can do the same work in 8 days. A and B signed to do it for Rs. 3200. They completed the work in 3 days with the help of C. How much is to be paid to C?
A) Rs. 600
B) Rs. 420
C) Rs. 400
D) Rs. 380
Q5) A is twice as good a workman as B and is therefore able to finish a piece of work in 30 days less than B. In how many days they can complete the whole work; working together?
A) 10 Days
B) 20 Days
C) 30 Days
D) 40 Days
Q6) Susan can type 10 pages in 5 minutes. Mary can type 5 pages in 10 minutes. Working together, how many pages can they type in 30 minutes?
Q7) A and B together can complete a task in 20 days. B and C together can complete the same task in 30 days. A and C together can complete the same task in 30 days. What is the respective ratio of the number of days taken by A when completing the same task alone to the number of days taken by C when completing the same task alone?
Q8) Worker A takes 8 hours to do a job. Worker B takes 10 hours to do a job. How long should it take both A and B, working together to do the same job?
Q9) A takes twice as much time as B or thrice as much time as C to finish a piece of work. Working together, they can finish the work in 2 days. B can do the work alone in
A) 4 days
B) 8 days
C) 6 days
D) 12 days
Q10) A can do a piece of work in 5 days and B do the same work in 6 days. If A and B work together they will complete the work?
A) 9(3/5) days
B) 9(3/5) days
C) 9(2/5) days
D) 30/11 days