**Q2. 21 men can do a piece of work in 15 days and 35 women can do a piece of work in 11 days. With the same efficiency 18 men and 20 women can do another piece of work in ‘(Y – 4)’ days and ‘Y’ days respectively. Find the value of Y? **

(a) 40

(b) 44

(c) 35

(d) 38

(e) 39

**Q3. A take 1/3rd time to do a piece of work as B takes to do same piece of work and C does it in the same time as A and B takes together to complete the same work. If all three working together would take 12 days. Find how long would each take if they work separately? **

(a)24 days, 72 days, 16 days

(b) 16days, 48 days, 12 days

(c) 20 days, 60 days, 15days

(d) 36 days, 108 days, 27 days

(e) 32days, 96days, 24 days

**Q4. A and B worked for 20 days and 15 days on a work respectively. The ratio of total wages earned by them is 5 : 4. What is the ratio of their respective efficiency if they work with same efficiency throughout the work.**

(a) 5 : 6

(b) 12 : 13

(c) 15 : 16

(d) 16 : 15

(e) 17 : 15

**Q5. A group of 18 men and 12 women can do a work in 18 days. A woman takes twice as much times as a man to do the work. How many days will 8 men take to finish the same work ? **

(a) 45

(b) 48

(c) 54

(d) 36

(e) None of these

**Q7. Manish and Suresh can do a task A in 48 days and 60 days respectively. If they together can complete another task B in x days and Manish alone can complete the task B in (x+ 16) days, then find in how many days Suresh alone can complete task B?**

(a) 45days

(b) 36days

(c) 28days

(d) 40days

(e) 48days

**Q8. 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

**Q9. 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 litre/minute.**

(a) 150 l

(b) 225 l

(c) 240 l

(d) 180 l

(e) 270 l

**Q10. 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 time pipe A alone can fill the tank completely. (in minutes)**

(a) 20

(b) 60

(c) 40

(d) 30

(e) 50

**Solutions**