**Q1. A is 20% more efficient than B who complete the work alone in 20 days. A work first two days alone, then find in how many days remaining work will be completed if both work together? **

(a) 6 days

(b) 5 days

(c) 9 days

(d) 8 days

(e) 7 days

**Q2. A and B can complete a work alone in 18 days and 24 days respectively. If B started work alone and after 3 days A also joined, then in how many days whole work will be completed. **

(a) 6 days

(b) 12 days

(c) 8 days

(d) 10 days

(e) 15 days

**Q3. P, Q and R can do a job alone in 16 days, 24 days and 32 days respectively. If they started together then in how many days the work be completed? **

(a) 5 days

(b) 8 days

(c) 12 days

(d) 96/13 days

(e) 95/11 days

**Q4. Ravi can do three fourth of a work in 27/2 hours while Hira can do two third of the same work in 8 hours. If both started working together then in how much time the work will be completed?**

(a) 8h

(b) 7.2h

(c) 8.4 h

(d) 9 h

(e) 9.2 h

**Q5. A takes three times as long as B and C together take to do a job. If all the three working together and complete the job in 24 days, then find in how many days A will complete the job alone? **

(a) 100

(b) 96

(c) 84

(d) 90

(e) 104

**Q6. 12 Men can complete a project in 15 days and 10 women can complete the same project in 24 days. 9 men start working and after 6 days they are replaced by 12 women. In how many days will 12 women complete the remaining work? **

(a) 20

(b) 10

(c) 16

(d) 18

(e) 14

**Q7. 8 men and 4 women together can complete a piece of work in 6 days. Work done by a man in one day is double the work done by a woman in one day. If 8 men and 4 women started working and after 2 days, 4 men left and 4 new women joined, in how many more days will the work be completed? **

(a) 5 days

(b) 8 days

(c) 6 days

(d) 4 days

(e) None of these

**Q8. 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) 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

**Q9. Three men A, B and C undertook a job for Rs 1080. A working alone and B working alone can complete it in 21 days and 28 days respectively. They all together take 7 days to complete the same work. What is the share of C?**

(a) Rs 360

(b) Rs 840

(c) Rs 270

(d) Rs 540

(e) Rs 450

**Q10. A, B, C are pipes attached into a cistern. A and B can fill it in 20 and 30 minutes respectively, while C can empty it in 15 minutes. If A, B and C be kept open successively for 1 minute each, how soon will the cistern be filled ?**

(a) 2 hr 44 min

(b) 2 hr 40 min

(c) 2 hr 47 min

(d) 2 hr 37 min

(e) None of these

**Q11. 5 inlet pipes (same capacity) can fill a tank in same time in which 3 outlet pipes (same capacity) can empty it. If 2 inlet and one outlet pipe is opened for first minutes and 5 inlet and 2 outlet pipes open for 2nd minute and process continues till tank is completely filled in 30 minutes. Find the time in which 2 outlet pipes can empty the completely filled tank. **

(a) 9 minutes

(b) 12 minutes

(c) 6 minutes

(d) 10 minutes

(e) 15 minutes

**Q12. Two pipes P and Q alone can fill a tank in 24 min and 30 min respectively and a pipe R alone can empty the tank by throwing out 8 gallons in 2 minutes. All the three pipes working together can fill the tank in 20 minutes. Find the capacity of the tank? **

(a) 80 gallons

(b) 160 gallons

(c) 320 gallons

(d) 240 gallons

(e) None of these

**Q13. A tank can be filled with water by two pipes A and B together in 36 minutes. If the pipe B was stopped after 30 minutes, rest of the tank filled in 10 minutes. The pipe B can alone fill the tank in **

(a) 45 minutes

(b) 60 minutes

(c) 75 minutes

(d) 90 minutes

(e) None of these

**Q14. Pipe A and Pipe B can fill a cistern together in 18 minutes. Pipe B is 50% more efficient than pipe A. Find the capacity of cistern, if it is given that pipe ‘A’ fills the cistern at speed of 6 litres/minute.**

(a) 150 l

(b) 225 l

(c) 240 l

(d) 180 l

(e) 270 l

**Q15. Pipe A and pipe B together can fill the tank in 12 minutes while pipe A, pipe B and pipe C together can fill the tank in 15 minutes and Pipe B and Pipe C together can fill the tank in 30 minutes. In how many times pipe A alone can fill the tank completely. (in minutes)**

(a) 20

(b) 60

(c) 40

(d) 30

(e) 50

**Solutions**