Time and Work

Time and Work

  •      Y can complete a work in 6 days. X alone can do it in 10 days. How much time will they take to complete the work together?
  1. 3.75 days
  2. 4 days
  3. 5 days
  4. 6 days
  •      A and B together can do a piece of work in 8 days. If A alone can do the same work in 12 days, then B alone can do the same work in?
  1. 20 days
  2. 16 days
  3. 24 days
  4. 28 days
  •      Arun and Boyle together can complete a piece of work in 35 days while Arun alone can complete the same work in 60 days. Boyle alone will be able to complete the same working in:
  1. 74 days
  2. 84 days
  3. 76 days
  4. 86 days
  •      L can do a piece of work in 4 days. M can do it in 5 days. With the assistance of N they completed the work in 2 days. In how many days can N alone do the work?
  1. 10 days
  2. 20 days
  3. 5 days
  4. 4 days.
  •      A and B can complete a work in 15 days and 10 days respectively. They started doing the work together but after 2 days B had to leave and A alone completed the remaining work. The whole work was completed in:
  1. 8 days
  2. 10 days
  3. 12 days
  4. 14 days
  •      Amit and Bachan can do a piece of work in 6 2/3 days and 5 days respectively. They work together for 2 days and then Amit leaves. In how many days after that Bachan will complete the work alone.
  1. 2 days
  2. 1 ½ days
  3. 3 days
  4. 3 ½ days
  •      A can do a piece of work in 15 days and B alone can do it in 10 days. B works at it for 5 days and then leaves. A alone can finish the remaining work in-
  1. 5.5 days
  2. 6.5 days
  3. 7.5 days
  4. 8.5 days
  •      A, B and C can do a piece of work in 20, 30 and 60 days respectively. In how many days can A do the work if he is assisted by B and C on every third day?
  1. 14 days
  2. 16 days
  3. 15 days
  4. 20 days    
  •      A is thrice as good as workman as B and therefore is able to finish a job in 60 days less than B. Working together, they can do it in:
  1. 22.5 days
  2. 23.5 days
  3. 24 days
  4. 25 days
  •  A does half as much work as B in three-fourth of the time. If together they take 18 days to complete the work, how much time shall B take to do it
  1. 25 days
  2. 30 days
  3. 40 days
  4. Cannot be determined
  •  A alone can do a piece of work in 6 days and B alone in 8 days. A and B undertook to do it for Rs. 3200. With the help of C, they completed the work in 3 days. How much is to be paid to C?
  1. 400
  2. 500
  3. 600
  4. 800
  •  Two pipes can fill the cistern in 10hr and 12 hr respectively, while the third empty it in 20hr. If all pipes are opened simultaneously, then the cistern will be filled in
  1. 10 hours
  2. 7 hours
  3. 8.5 hours
  4. 7.5 hours
  •  10 women can complete a work in 7 days and 10 children take 14 days to complete the work. How many days will 5 women and 10 children take to complete the work?
  1. 5 days
  2. 6 days
  3. 7 days
  4. 9 days
  •  To complete a piece of work A and B take 8 days, B and C 12 days. A, B and C take 6 days. A and C will take:
  1. 5 days
  2. 6 days
  3. 7 days
  4. 8 days
  •  A and B together can complete a work in 3 days. They start together but after 2 days, B left the work. If the work is completed after two more days, B alone could do the work in
  1. 5 days
  2. 6 days
  3. 9 days
  4. 10 days
  •  Working 5 hours a day, A can Complete a work in 8 days and working 6 hours a day, B can complete the same work in 10 days. Working 8 hours a day, they can jointly complete the work in:
  1. 3 days
  2. 4 days
  3. 4.5 days
  4. 6 days
  •  A and B can do a piece of work in 45 days and 40 days respectively. They began to do the work together but A leaves after some days and then B completed the remaining work in 23 days. The number of days after which A left the work was
  1. 8
  2. 8.5
  3. 9
  4. 10
  •  A takes twice as much time as B or thrice as much time as C to finish a piece of work. Working together, they can finish the work in 2 days. B can do the work alone in:
  1. 6 days
  2. 6.5 days
  3. 7 days
  4. Cannot be determined
  •  4 men and 6 women can complete a work in 8 days, while 3 men and 7 women can complete it in 10 days. In how many days will 10 women complete it?
  1. 35 days
  2. 40 days
  3. 45 days
  4. Cannot be determined
  •  5 men and 2 boys working together can do four times as much work as a man and a boy. Working capacity of man and boy is in the ratio-
  1. 1:2
  2. 2:1
  3. 1.5:2
  4. Cannot be determined

Answers:

1 A
2 C
3 B
4 B
5 C
6 B
7 C
8 C
9 A
10 B
11 A
12 D
13 C
14 D
15 B
16 A
17 C
18 A
19 B
20 B

 

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