Most Important Questions of Time and Work for SBI PO

As we all know SBI PO is here and we are ready with the 80 days plan in which we provide you daily quizzes on new pattern questions with different topics that will help you to go through this exam.
So, here we are with the Most important questions of Time and Work.


Q1. 12 men complete a work in 18 days. Six days after they had started working, 4 men joined them. How many days will all of them take to complete the remaining work ? 
(a) 10 days
(b) 12 days
(c) 15 days
(d) 9 days
(e) None of these 

Q2. Suresh can finish a piece of work by himself in 42 days. Mahesh, who is 1/5 times more efficient as Suresh, requires X days to finish the work by working all by himself. Then what is the value of X ? 
(a) 25 days
(b) 30 days
(c) 35 days
(d) 20 days
(e) None of these 

Q3. Two pipes A and B when working alone can fill a tank in 36 min. and 5 min. respectively. A waste pipe C can empty the tank in 30 min. First A and B are opened. After 7 min., C is also opened. In how much time (in mins) will the tank be full ? 
(a) 60
(b) 39
(c) 42
(d) 51 
(e) None of these 

Q4. A and B together can do a piece of work in 12 days which B and C together can do in 16 days. After A has been working at it for 5 days, and B for 7 days, C takes up and finishes it alone in 13 days. In how many days could each do the work by himself ? 
(a) 8, 16, 24 
(b) 16, 24, 8 
(c) 16, 48, 24 
(d) 8, 24, 48
(e) None of these 

Q5. A group of men decided to do a job in 4 days. But since 20 men dropped out every day, the job completed at the end of the 7th day. How many men were there at the beginning?
(a) 240
(b) 140
(c) 280
(d) 150
(e) None of these

Q6. C is twice efficient as A, B takes thrice as many days as C. A takes 12 days to finish the work alone. If they work in pairs (i.e., AB, BC, CA) starting with AB on the first day then BC on the second day and AC on the third and so on, then how many days are required to finish the work?

Q7. There was a leakage in the container of the refined oil. If 11 kg oil is leaked out per day then it would have lasted for 50 days, if the leakage was 15 kg per day, then it would have lasted for only 45 days. For how many days would the oil have lasted, if there was no leakage and it was completely used for eating purpose?
(a) 80 days
(b) 72 days
(c) 100 days
(d) 120 days
(e) None of these

Q8. 4 Men and 2 boys can finish a piece of work in 5 days. 3 women and 4 boys can finish the same work in 5 days. Also 2 men and 3 women can finish the same work in 5 days. In how many days 1 men, 1 women and 1 boy and finish the work, at their double efficiency?

Q9. It takes 30 hours for an inlet pipe to fill an empty tank completely. When 5 identical inlet pipes and 4 identical outlet pipes operate together, the same empty tank get filled completely in 10 hours. How much time (in hours) will an outlet pipe take to empty the same tank when it’s filled upto half its volume?
(a) 15
(b) 20
(c) 24
(d) 30 
(e) None of these

Q10. Water flows at 3 metres per sec through a pipe of radius 4 cm. How many hours will it take to fill a tank 40 metres long, 30 metres broad and 8 metres deep, if the pipe remains full?
(a) 176.6 hours
(b) 120 hour
(c) 135.5 hour
(d) 140 hour
(e) None of these

Q11. 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 the get Rs 450 for the whole work, how should they divide the money?
(a) Rs 225, Rs 150, Rs 75
(b) Rs 250, Rs 100, Rs 100
(c) Rs 200, Rs 150, Rs 100
(d) Rs 175, Rs 175, Rs 100
(e) None of these

Q12. The work done by a man, a woman and a child is in the ratio of 3 : 2 : 1. There are 20 men, 30 women and 36 children in a factory. Their weekly wages amount to Rs 780, which is divided in the ratio of work done by the men, women and children. What will be the wages of 15 men, 21 women and 30 children for 2 weeks?
(a) Rs 585
(b) Rs 292.5
(c) Rs 1170
(d) Rs 900
(e) None of these

Q13. The Bubna dam has four inlets. Through the first three inlets, the dam can be filled in 12 minutes; through the second, the third and the fourth inlet, it can be filled in 15 minutes; and through the first and the fourth inlet, in 20 minutes. How much time will it take all the four inlets to fill up the dam?
(a) 8 min
(b) 10 min
(c) 12 min
(d) 14 min
(e) None of these

Q14. 3 small pumps and a large pump are filling a tank. Each of the three small pumps works at 2/3 rd the rate of the large pump. If all 4 pumps work at the same time, they should fill the tank in what fraction of the time that it would have taken the large pump alone?
(a)  4/7
(b) 1/3
(c) 2/3
(d) 3/4
(e) None of these

Q15. A pipe can fill a tank in 15 minutes and another one in 10 minutes. A third pipe can empty the tank in 5 minutes. The first two pipes are kept open for 4 minutes in the beginning and then the third pipe is also opened. In what time will the tank be emptied?
(a) 35 min
(b) 15 min
(c) 20 min
(d) Cannot be determined
(e) None of these



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