ICSE Board Practice

Class VI Class VII Class VIII Class IX Class X
ICSE Grade VIII - Time and Work
Question 1
1.
    • A can construct
    • 4
      7
    • of a wall in
    • 3
      3
      7
      hr
    • .
    • B can construct
    • 3
      10
    • of the wall in
    • 3
      hr
    • .
    • C can construct
    • 3
      5
    • of the wall in
    • 6
      hr
    • .
    • If all three work together, in how much time will they
    • construct
    • 6
      10
    • of the wall?
  • 1
    7
    9
    hr
  • 1
    9
    11
    hr
  • 1
    5
    11
    hr
  • 1
    7
    13
    hr
  • 1
    7
    11
    hr
Question 2
2.
    • Pipe A can fill a tank in
    • 8
      hr
    • and pipe B can empty the full tank in
    • 24
      hr
    • .
    • If both the pipes are opened together,
    • in how much time will the tank become full?
  • 12
    hr
  • 13
    hr
  • 15
    hr
  • 10
    hr
  • 11
    hr
Question 3
3.
    • A, B and C can together do a piece of work in
    • 2
      8
      11
      days
    • .
    • B and C can do it in
    • 3
      3
      4
      days
    • .
    • C alone can do it in
    • 10
      days
    • .
    • In how much time A and C can do the work together?
  • 2
    days
  • 5
    days
  • 7
    days
  • 4
    days
  • 6
    days
Question 4
4.
    • A and B can do a work in
    • 6
      days
    • , B and C can do in
    • 6
      days
    • and C and A can do in
    • 6
      days
    • .
    • If all three work together,
    • in how many days will the work be completed?
  • 3
    days
  • 7
    days
  • 2
    days
  • 5
    days
  • 4
    days
Question 5
5.
    • 5
    • men take
    • 3
      days
    • to complete a work.
    • How much work is done by one man in one day?
  • 1
    15
  • 1
    3
  • (
    -1
    15
    		 )
  • 1
    5
Question 6
6.
    • A and B can do a work in
    • 20
      days
    • and
    • 14
      days
    • respectively.
    • If they work on alternate days and A begins the work,
    • in how many days can it be completed?
  • 18
    days
  • 16
    days
  • 17
    days
  • 20
    days
  • 15
    days
Question 7
7.
    • A, B, C, D, and E can do a piece of work in
    • 12
      hr
    • ,
    • 6
      hr
    • ,
    • 8
      hr
    • ,
    • 14
      hr
    • and
    • 11
      hr
    • respectively.
    • Who has the greatest capacity to do work?
  • C
  • E
  • A
  • B
  • D
Question 8
8.
    • A, B, C, D, and E can do a piece of work in
    • 13
      days
    • ,
    • 5
      days
    • ,
    • 11
      days
    • ,
    • 7
      days
    • and
    • 6
      days
    • respectively.
    • Who has the greatest capacity to do work?
  • C
  • E
  • D
  • B
  • A
Question 9
9.
    • A and B can do a piece of work in
    • 11
      days
    • and
    • 10
      days
    • respectively.
    • They work together for
    • 2
      days
    • and then B leaves.
    • In how many days the whole work is completed?
  • 8
    2
    5
    days
  • 9
    1
    3
    days
  • 8
    4
    7
    days
  • 9
    1
    5
    days
  • 8
    4
    5
    days
Question 10
10.
    • Person P is
    • eight times
    • as good a workman as Person Q.
    • They can do a work together in
    • 5
      1
      3
      days
    • .
    • In how many days Q alone can do the work?
  • 51
    days
  • 45
    days
  • 49
    days
  • 48
    days
  • 47
    days