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Time and Work

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Question: A and B can do a work in 12 days. B and C can do it is 15 days and A and C can do it in 20 days. If all of them work together, in how many days they can finish the work?

  1. a.
    25
  2. b.
    9
  3. c.
    12
  4. d.
    10
  5. e.
    15
Answer: d

Question: A, B and C started a job which they can complete in 2 days. B can do the job in 5 days and C can do it in 4 days. After working for 1 day, both B and C left. How long would it take A to complete the rest of the job?

  1. a.
    20 days
  2. b.
    30 days
  3. c.
    4 days
  4. d.
    10 days
  5. e.
    None of these
Answer: d

Question: A cake is put in the oven at 7.20 am. If the cake takes three quarters of an hour to bake, at what time should it be taken out of the oven?

  1. a.
    8 : 10 a.m
  2. b.
    8 : 05 a.m
  3. c.
    8 : 15 a.m
  4. d.
    7 : 50 a.m
  5. e.
    None of these
Answer: b

Question: A man works twice as much as his assistant. The man can finish the job in 12 days. Find the number of days in which the man and his assistant can finish the job if they work together?

  1. a.
    12
  2. b.
    8
  3. c.
    6
  4. d.
    10
  5. e.
    None of these
Answer: b

Question: A mechanic repairs 4 cars in 5/3 hours. How many cars can he repair in 50 minutes?

  1. a.
    2
  2. b.
    21/3
  3. c.
    22/3
  4. d.
    25/3
  5. e.
    None of these
Answer: a

Question: If 15 women working at the same rate can produce 25 dolls in an hour, how many dolls would 20 women make in 45 minutes?

  1. a.
    20
  2. b.
    25
  3. c.
    30
  4. d.
    50
Answer: b

Question: If a worker can packs 1/6 of a carton of canned food in 15 minutes and there are 40 workers in a factory, how many cartons should be packed in the factory in 5/3 hours?

  1. a.
    33
  2. b.
    362/9
  3. c.
    391/9
  4. d.
    400/9
  5. e.
    137/3
Answer: d

Question: If 15 men working at the same rate can manufacture 27 baskets in an hour, how many baskets would 45 men manufacture in 40 minutes?

  1. a.
    37
  2. b.
    54
  3. c.
    35
  4. d.
    40
Answer: b

Question: If m men can do a job in 10 days, how many days it will take for 10 men to complete the job assuming that they work at the same rate?

  1. a.
    m
  2. b.
    10/m
  3. c.
    100m
  4. d.
    10m
  5. e.
    None
Answer: a

Question: Six men can complete a work in 5 days if they work for 8 hours per day. How many days will 4 men take to do the same work if they work only 5 hours per day?

  1. a.
    12
  2. b.
    16
  3. c.
    24
  4. d.
    32
  5. e.
    none of these
Answer: a

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