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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
Q11. A man can row a distance of 2 km upstream in 15 min and returns the same distance in 10 min. How much time will he take to row the same distance upstream if due to a tide the speed of the current gets doubled?
(a) 20 min
(b) 25 min
(c) 30 min
(d) 45 min
(e) 60 min
Q12. A boat can cover an equal distance in upstream and in downstream in 6 hours. If speed of boat in still water is 200% more than the speed of stream then find the time taken to cover the same distance in upstream.
(a) 5 hours
(b) 3 hours
(c) 4.5 hours
(d) 3.5 hours
(e) 4 hours
Q14. The ratio of length of two train A and B are 7 : 11. If these two train crosses each other while travelling in same direction in 144 sec given that speed of train A and B is 99 kmph and 63 kmph respectively. Then find the difference between length of both train.
(a) 320 m
(b) 200 m
(c) 180 m
(d) 360 m
(e) 400 m
Q15. A train A moving with a speed of 80 m/s crosses another train B moving with speed of 65 m/s in same direction in At the same time, train A crosses a man sitting in one of the compartments of train B in 20 sec. Find ratio of length of train A and train B?
(a) 5:6
(b) 4:3
(c) 6:5
(d) 3:4
(e) 2:3
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