1.A and B can do a piece of work in 12 days, B and C in 15 days, C and A in 20 days. How many days will they take to complete the work if all of them working together.
(a) 8 (b) 8.5 (c) 10 (d) 10.5
2. A is twice as good a workman as B and together they finish a piece of work in 4 days. In how many days will B alone finish the work?
(a) 12 (b) 10 (c) 6 (d) 8
3. A and B working together take 15 days to complete a piece of work. If B alone does the same work in 60 days, then how long will A take to complete the same work?
(a) 30 (b) 20 (c) 25 (d) 22.5
4. A works thrice as much as B. If A takes 60 days less than B to do a work then find the number of days it would take to complete the work if both work together?
(a) 25 (b) 30 (c) 20 (d) 22.5
5. Prakash can do 50% of a piece of work in 3 days. Prem can do 25% of the same work in 3 days. Prakash and Prem work together after 2 days Prakash left the work then how many days will Prem take to complete the remaining work?
(a) 4 (b) 3.5 (c) 3 (d) 4.5
6. Kannan alone can do 30% of a piece of the work in 36/5 days. Raja alone can do 40% of the same work in 24/5 days. If Kannan and Raja are working for first two days then Raja leaves the job. How many days will Kannan take to complete the remaining work?
(a) 9 (b) 8 (c) 6 (d) 8.5
7. A can do a piece of work in 20 days. B can do the same work in 25 days. If they work on alternate days starts with A, then how long will they take to complete the work?
(a) 22.2 (b) 22.5 (c) 20.5 (d) None of these
8. A alone can do a piece of work in 12 days and B alone can do it in 15 days. A and B undertook to do it for Rs. 1200. With the help of C they finished it in 5 days. How much is paid to C?
(a) ) Rs. 400 (b) Rs. 300 (c) ) Rs. 350 (d) ) Rs.450
9. A contractor agreeing to finish a piece of work in 150 days employed 50 men each working 12 hours daily. After 90 days, only 2/7 of the work was completed. Increasing the number of men by________ each working now for 10 hours daily, the work can be completed in time.
(a) 225 (b) 200 (c) 175 (d) 210
10. A group of workers can do a piece of work in 24 days. However as 4 of them were absent it took 42 days to complete the work. How many people actually worked on the job to complete it?
(a) 30 (b) 35 (c) 40 (d) 28
11. Thirty men take 20 days to complete a job working 8 hours a day. How many hours a day should 40 men work to complete the job in10 days?
(a) 8 hrs (b) 10 hrs (c) 12 hrs (d) 14 hrs
12. If 20 men can build a wall 56m long in 6 days, what length of a similar wall can be built by 35 men in 3 days?
(a) 28 m (b) 30 m (c) 49 (d) 58
13. Fifteen men take 27 days of 8 hrs each to do a piece of work. How many days of 6 hrs each would it take for 27 women if 3 women do as much work as 2 men?
(a) 30 (b) 20 (c) 19 (d) 29
14. 5 men or 8 women do equal amount of work in a day, a job requires 3 men and 5 women to finish the job in 15 days how many woman are required to finish the job in 21 days.
(a) 7 (b) 10 (c) 6 (d) 12
15. It was calculated that 75 men could complete a piece of work in 27 days. When work was scheduled to commence, it was found necessary to send 30 men to another project. How long will it take to complete the work?
(a) 30 (b) 45 (c) 35 (d) 27
16. A contractor has to finish a flyover in 200 days. He employed 120 workers for 80 days and gets one-fourth of work done. Find the additional number of worker to be employed to complete the work in given time.
(a) 150 (b) 160 (c) 180 (d) 240
17.2 men and 3 boys can do a piece of work in 10 days while 3 men and 2 boys can do the same work in 15 days. In how many days can 1 man and 1 boy do the work?
(a) 20 (b) 30 (c) 25 (d) 35
18. Pipes A, and B can fill the cistern in 20 minutes and 30 minutes respectively and C can empty in 15 minutes. If the three are opened and closed after the other successively for 1 minute each in that order, how soon will the cistern be filled?
(a) 165 minutes (b) 180 minutes (c) 167 minutes (d) None of these
19. Pipe A usually fills a tank in 2 hours. On account of a leak at the bottom of the tank, it takes pipe A 30 more minutes to fill the tank. How long will the leak take to empty a full tank if pipe A is shut?
(a) 8 hours (b) 10 hours (c) 12 hours (d) 9 hours
20. Pipes A, and B can fill the cistern in 20 minutes and 30 minutes respectively and C can empty in 15 minutes. In what time will the cistern be full, if all the pipes are opened together?
(a) 60 minutes (b) 45 minutes (c) 65 minutes (d) None of these
21. Shyam can do a job in 20 days, Ram in 30 days and Singhal in 60 days. If Shyam is helped by Ram and Singhal every 3rd day, how long will it take for them to complete the job?
(a) 12 days (b) 16 days (c) 15 days (d) 10 days
22. Two workers A and B manufactured a batch of identical parts. A worked for 2 hours and B worked for 5 hours and they did half the job. Then they worked together for another 3 hours and they had to do (1/20) th of the job. How much time does B take to complete the job, if he worked alone?
(a) 24 hours (b) 12 hours (c) 15 hours (d) 30 hours
23. Pipe A fills a tank of 700 litres capacity at the rate of 40 litres a minute. Another pipe B fills the same tank at the rate of 30 litres a minute. A pipe at the bottom of the tank drains the tank at the rate of 20 litres a minute. If pipe A is kept open for a minute and then closed and pipe B is kept open for a minute and then closed and then pipe C is kept open for a minute and then closed and the cycle repeated, how long will it take for the empty tank to overflow?
(a) 42 min 20sec (b) 14 minutes 20sec (c) 39 minutes 20sec (d) 40 min 20sec
24. P and Q can do a job in 10 days and 15 days respectively. They began the work together but P leaves after some days and Q finished the remaining job in 5 days. After how many days did P leave?
(A) 12 (B) 3 (C) 8 (D) 4
25. .A and B undertake to do a work for Rs.600. A alone can do it in 6 days will B alone can do it in 8 days with the help of C they finish the job in 3 days. Find the share of each.
(A) 300, 225,75 (B) 300,200,100 (C) 200,200,200 (D) 400,150,50
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