Time And work – Set 11

Time and work related questions are very important for competitive exams with usually 2-3 questions coming from this section. We will be coming up with over 20 sets on time and work set problems for your practice.

Q1. Two worker’s A and B working together completed a job in 5 days. If A worked twice as efficiently as he actually did and B worked 1/3 as efficiently as he actually did, the work would have been completed in 3 days. To complete the job alone, A would require:
(a) 5 1/5 days
(b) 6 1/4 days
(c) 7 1/2 days
(d) 8 3/4 days
(e) None of these

Q2. Sunil completes a work in 4 days, whereas Dinesh completes the work in 6 days. Ramesh works 1 1/2 times as fast as Sunil. The three together can complete the work in:
(a) 1 5/12 days
(b) 1 5/7 days
(c) 1 3/8 days
(d) 1 5/19 days
(e) None of these

Q3. A, B and C can do a piece of work in 30, 20 and 10 days respectively. A is assisted by B on one day and by C on the next day, alternately. How long would the work take to finish?
(a) 9 3/8 days
(b) 4 4/8 days
(c) 8 4/13 days
(d) 3 9/13 days
(e) None of these

Q4. A and B together can complete a piece of work in 12 days and B and C together in 15 days. If A is twice as good a workman as C, then in how many days will B alone complete the same work?
(a) 30
(b) 25
(c) 24
(d) 20
(e) None of these

Q5. A can do a piece of work in 10 days, while B alone can do it in 15 days. They work together for 5 days and the rest of the work is done by C in 2 days. If they get Rs 450 for the whole work, how should they divide the money?
(a) Rs225, Rs150, Rs75
(b) Rs250, Rs100, Rs100
(c) Rs200, Rs150, Rs100
(d) Rs175, Rs175, Rs100
(e) None of these

SOLUTIONS:

1.B
2.D
3.A
4.D
5.A