Time and Work Quiz 09

  • A contractor who had a work force of 560 persons undertakes to complete a portion of a stadium in 9 months. He has asked to complete the job in 7 months. How many extra persons had he to employ?





  • Working 8 hours a day an can copy a book in 8 days. How many hours a day should she work so as to finish the work in 12 days?





  • If the volume of a gas at pressure 270 mm is 840 cm. cms. Find the volume of gas at pressure 315 mm assuming the temperature remains constant in (cu am)





  • A and B together can do a work in 30 days. A alone can do it in 40 days. In how many days B alone can do it?





  • A and B can do a work in 24 days. B and C in 30 days. C and An in 40 days. How long would all of them take to do the same work?





  • A is thrice as good a workman as B. together they can do a work in 12 days. How many days B alone can do the work?





  • A and B can do a work in 9 and 12 days respectively, if they work on alternate days. A beginning which day wills the work he completed?





  1. A, B , C can do a work in 15,20 and 12 days respectively. In how many days can they together complete the work?





Two taps A and B can fill a tank in 8 and 6 hours respectively. Another tap C can empty the tank in 24 hours. How long would it take to fill the empty tank when all the taps are opened?





A finished 1/5 of work in 10 days. In how many days, will he finish the remaining work ( in days)







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