time and wrk set 8

Time And Work(set-8)- Maths Quiz Based Question/Answers

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TIME & WORK (Set – 8)

1) A, B and C individually can do a work in 40 days, 16 days and 28 days, respectively. A and B start the work but after 8 days, B leaves the work and C joins. After 2 days of when C joins, A also leaves the work. C alone does the work for next three days and leaves the work. Find the remaining part of the work to be completed?

  1. a) 1/10 b) 2/3 c) 13/14 d) 1/14 B e) 3/28

 2) Four employees A, B, C, and D are assigned to do a project. A can complete the project in 30 hours while A and B together can complete the project in 24 hours. All the four employees together can complete the project in 6 hours and efficiency of C is twice the net efficiency of A and B together. In how much time B and D together can complete the project?

  1. a) 25 days b) 24 days c) 18 days d) 20 days e) 15 days

 3) A contractor hired 3 men and 7 boys to finish a work in 10 days. If he hires 4 men and 6 boys then the work can be finished in 8 days. If contractor now hired one man, one boy and one women to finish the work while knowing that 20 women can finish the work in 5 days itself then in how much time work will be?

  1. a) 20 Days b) 18 Days c) 25 Days d) 20 Days e) None of these

 4) Meet and Ramesh can finish a work while working alone in 20 and 30 days respectively. If they start working together then every 2nd day both will work at half of their efficiency. In such a way they worked for 8 days and then Meera alone finished the remaining work in 3 days. How much time will Meera take to finish the complete work while working alone?

  1. a) 9 days b) 8 days c) 6 days d) 12 days e) None of these

5) A tank is connected with three inlet pipes P, Q and R. Time taken by pipes P and Q together to fill the tank is 6 hours less than the time taken by pipe R alone to fill the same tank. Pipe P is 50% more efficient than pipe Q. Together they can fill the tank in 13 hours 20 minutes, then find the time taken by pipe R (> 3 hour) to fill the tank alone.

  1. a) 24 hours b) 30 hours c) 20 hours d) 36 hours e) None of these

6) 2 inlet pipes A and B and an outlet pipe C is connected to a tank Time taken by pipes A and C together to till the tank is 500% more than the time taken all the pipes together. While time taken by pipes B and C together to till the tank is 200% more than the time taken all the pipes together. Pipe C alone can empty the tank in 20 minutes, then find the time taken by pipes A and B together to fill the tank.

  1. a) 20/3 minutes b) 20 minutes c) 40/3 minutes d) 10/3 minutes e) None of these

7) Six similar inlet pipes and ‘x’ similar outlet pipes can fill a tank in 45 minutes. The efficiency of each inlet pipe is 50% more than the efficiency of each outlet pipe. If pipe A individually can fill the same tank in 54 minutes and the efficiency of one inlet pipe is 30% of the efficiency of pipe A, then find the value of ‘x’.

  1. a) 5 b) 4 c) 3 d) 2 e) None of these

 8) A, B and C can individually can complete the task in 12, 15 and 10 days respectively. A started the work and worked for ‘x’ days and then left the work. B then started the work and worked for (x + 2) days and then both A and C joined B to complete the remaining work in 5/3 days. Find the value of ‘x’

a) 2 days b) 3 days c) 2.5 days d) 4 days e) None of these

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