QBM054

Q1. If 20 men can build a wall 112 metres long in 6 days, what length of a similar wall can be built by 25 men in 3 days? (a)140 metres (b)44.8 metres (c)105 metres (d)70 metres Q2. A pipe can fill a tank is x hours and another can empty it in y hours. If the tank is 1/3rd full then the number of hours in which they will together fill it in is Q3. If 18 pumps can raise 2170 tonnes of water in 10 days, working 7 hours a day, in how many days will 16 pumps raise 1736 tonnes, working 9 hours a day? (a)9 days (b)8 days (c)7 days (d)6 days Q4. Ram, who is half as efficient as Krish, will take 24 days to complete a work if he worked alone. If Ram and Krish worked together, how long will they take to complete the work? (1)16 days (2)12 days (3)8 days (4)18 days Q5. A garrison had provisions for a certain number of days. After 10 days (1/5)th of the men desert and it is found that the provisions will now last just as long as before. How long was that: (a)35 days (b)15 days (c)25 days (d)50 days Q6. Dev and Tukku can do a piece of work in 45 and 40 days respectively. They began the work together, but Dev leaves after some days and Tukku finished the remaining work in 23 days. After how many days did Dev leave Q7.If Lisa can type a paper in 5 hours and together she and Bill can type it in 2 hours, how long would it take Bill to type the same paper alone? Q8. If 5 engines consume 6 metric tonnes of coal when each is running 9 hours a day, how much coal will be needed for 8 engines, each running 10 hours a day, it being given that 3 engines of the former type consumer as much as 4 engines of latter type? (a)8 metric tonnes (b)8-8/9 metric tonnes (c)3-1/8 metric tonnes (d)6.48 metric tones Q9. I don't get dealing with things like for example, you have 25 workers and hired 16% more and then you have to find out what that 16% is. you know like porportions. setting it up as 25 over 100 and then 16 over blank..I think...maybe i reversed that but please help me. Q10. Ben takes 2 hours to wash 500 dishes, and Frank takes 3 hours to wash 450 dishes. How long will they take, working together, to wash 1000 dishes? It will take two and a half hours for the two of them to wash 1000 dishes. Q11. At an avearage speed of 30 km/hr from his home to a point that is 120 km away. What must his average speed be on the return trip if he wants his average speed for the entire trip tp be 40km/hr? Q12. 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 Q13. If 3 men or 6 boys can do a piece of work in 10 days, working 7 hours a day; how many days will it take to complete a work twice as large with 6 men and 2 boys working together for 8 hours a day? (a)7-1/2 days (b)8-1/2 days (c)9 days (d)6 days Q14. A takes 5 days more than B to do a certain job and 9 days more than C; A and B together can do the job in the same time as C. How many days A would take to do it? END