Q1. 5 men can do a work in 16 days and 8 women can do the same work in 15 days. In how many days 2 man and 3 women can do the work together?
(a) 22 days
(b) 20 days
(c) 21 days
(d) 18 days
(e) 24 days
Q2. 14 man can make 1000 cricket bats in 12 hours. After 8 hours of work, 2 more man joined them and starts working. How many more hours will it take to complete the production of 2000 cricket bats?
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Q3.P, Q and R can do some work in 36 days. P and Q together do twice as much work as R alone and P and R together can do thrice as much work as Q alone. Find the time taken by R to do the same work.
(a) 80 days
(b) 72 days
(c) 108 days
(d) 96 days
(e) 120 days
Q4. Rahul is 25% more efficient than Ravi and Ravi is 20% less efficient than Rekha. If Rekha completes a job in 20 days, then in how many days Rahul will complete the same job?
Q5. A is 40% more efficient than B. If B takes 6 days more than A to complete a work alone then in how many days ‘A’ alone can complete the whole work.
(a) 10 days
(b) 15 days
(c) 21 days
(d) 24 days
(e) 12 days
Q6. A certain number of people were supposed to complete a work in 20 days. The work, however, took 28 days, since 8 people were absent throughout. How many people were supposed to be working originally?
Q7. ‘X’ men can complete a work in (X–2) days while (X–10) men can complete same work in 2X days. Find in how many days (X–6) men can complete half of the work?
(a) 8 days
(b) 12 days
(c) 16 days
(d) 20 days
(e) 24 days
Q8. Two inlet pipes can fill a tank in 15 min and 20 min alone respectively. If these two pipes are opened with an outlet pipe, then the tank fills in 12 min then find in how much time outlet pipe can empty full tank.
(a) 24 min
(b) 30 min
(c) 25 min
(d) 20 min
(e) 36 min
Q9. Two pipes can fill a tank in 15 hours and 20 hours respectively, while the third pipes can empty it in 30 hours. If all the pipes are opened simultaneously, the empty tank will be filled in
(a) 10 hours
(b) 12 hours
(c) 15 hours
(d) 15½ hours
(e) 20 hours
Q10. The rate of filling pipes A and B is 50 m3/ min and 60 m3/ min respectively. They together can fill a tank of capacity 3000 m3 in how much time?
(a) 200/11 min
(b) 300/11 min
(c) 400/17 min
(d) 100/9 min
(e) 500/11 min
Directions (11-15): Given below are the number of students (in hundreds) in two schools A and B, in different years. Answer the following questions based on given DI.
Q11. What is the average number of students of school A in the year 2013, 2014 and 2016 and number of students of school B in the year 2012 and 2015 together?
Q12. If in year 2017, number of students of school A decreases by 25% and that of school B increases by 10% as compared to year 2016. Find total number of students of school A and B together in 2017.
Q13. Total number of students of school B in year 2015 is approximately what percent more than that of total number of students of school A in year 2012.
Q14. If school A students in year 2012 decreases by 20% as compared to 2011. What was the total number of students in school A in 2011?
Q15. Find the ratio of students in school A in the year 2013 and 2014 to the students in school B in the year 2015 and 2016 together?
(a)12 : 11
(b) 8 : 7
(c) 1 : 6
(d) 3 : 2
(e) 11 : 12
Practice More Questions of Quantitative Aptitude for Competitive Exams:
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