ICSE Board Practice

Class VI Class VII Class VIII Class IX Class X
ICSE Grade VIII - Time and Work
Question 1
1.
    • A and B can do a piece of work in
    • 14
      days
    • and
    • 14
      days
    • respectively.
    • They work together for
    • 5
      days
    • and then B leaves.
    • In how many days the whole work is completed?
  • 10
    days
  • 6
    days
  • 9
    days
  • 11
    days
  • 8
    days
Question 2
2.
    • Two pipes can fill a tank in
    • 5
      min
    • and
    • 12
      min
    • respectively.
    • Both pipes are
    • opened together and after some time the first pipe is closed and the tank
    • becomes full in
    • 9
      3
      5
      min
    • from the time when both pipes are opened.
    • For how much time was first pipe open?
  • 4
    min
  • -1
    min
  • 2
    min
  • 1
    min
  • 0
    min
Question 3
3.
    • A, B, C, D, and E can do a piece of work in
    • 11
      hr
    • ,
    • 14
      hr
    • ,
    • 5
      hr
    • ,
    • 15
      hr
    • and
    • 9
      hr
    • respectively.
    • Who has the greatest capacity to do work?
  • C
  • E
  • B
  • A
  • D
Question 4
4.
    • A can do a piece of work in
    • 13
      days
    • ,
    • B can do the work in
    • 9
      days
    • and C in
    • 15
      days
    • respectively.
    • In how much time can they do it together?
  • 3
    138
    149
    days
  • 3
    46
    49
    days
  • 3
    138
    151
    days
  • 3
    140
    149
    days
  • 3
    136
    149
    days
Question 5
5.
    • A, B, C, D, and E can do a piece of work in
    • 13
      days
    • ,
    • 8
      days
    • ,
    • 14
      days
    • ,
    • 5
      days
    • and
    • 6
      days
    • respectively.
    • Who has the greatest capacity to do work?
  • C
  • B
  • A
  • E
  • D
Question 6
6.
    • 10
    • men can do a work in
    • 11
    • days working
    • 3
    • hours a day.
    • In how many days can
    • 14
    • men do the same work, working
    • 4
    • hours a day?
  • 5
    23
    28
    days
  • 5
    5
    6
    days
  • 5
    25
    28
    days
  • 5
    25
    26
    days
  • 5
    27
    28
    days
Question 7
7.
    • A and B can do a work in
    • 4
      14
      19
      hr
    • ,
    • B and C can do it in
    • 5
      hr
    • and C and A can do it in
    • 4
      14
      19
      hr
    • .
    • In how much time can
    • each of them do it seperately?
  • (
    9
    hr
    ,
    11
    hr
    ,
    10
    hr
    )
  • (
    10
    hr
    ,
    11
    hr
    ,
    10
    hr
    )
  • (
    10
    hr
    ,
    10
    hr
    ,
    10
    hr
    )
  • (
    9
    hr
    ,
    10
    hr
    ,
    10
    hr
    )
  • (
    9
    hr
    ,
    10
    hr
    ,
    11
    hr
    )
Question 8
8.
    • 9
    • men and
    • 8
    • women can do a piece of work in
    • 2
    • days.
    • 1
    • men and
    • 12
    • women can do the same work in
    • 8
    • days.
    • In how many days can
    • 4
    • men and
    • 4
    • women complete the same work?
  • 4
    4
    11
    days
  • 4
    2
    3
    days
  • 4
    2
    9
    days
  • 4
    4
    7
    days
  • 4
    4
    9
    days
Question 9
9.
    • A can do a piece of work in
    • 13
      hr
    • ,
    • B can do the work in
    • 13
      hr
    • and C in
    • 15
      hr
    • respectively.
    • In how much time can they do it together?
  • 4
    23
    45
    hr
  • 4
    25
    43
    hr
  • 4
    23
    43
    hr
  • 4
    21
    43
    hr
  • 4
    23
    41
    hr
Question 10
10.
    • P and Q can do together a piece of work in
    • 3
      3
      7
      days
    • .
    • After they have worked together for
    • 2
      days
    • ,
    • P stops.
    • Q completes the remaining work in
    • 3
      1
      3
      days
    • .
    • In how many days can Q alone do the work?
  • 8
    days
  • 6
    days
  • 11
    days
  • 9
    days
  • 7
    days