ICSE Board Practice

ICSE Grade VIII - Simultaneous Linear Equations
Question 1
1.
    • Solve the following pair of equations :
    • (
      x
      +
      6
      y
      )

      x
      y
      =
      -48
    • (
      15
      x
      +
      8
      y
      )

      x
      y
      =
      34
  • (
    (
    -3

    7
    )
    ,
    (
    -1

    6
    )
    )
  • (
    (
    -1

    7
    )
    ,
    (
    -1

    8
    )
    )
  • (
    (
    -1

    7
    )
    ,
    (
    -1

    6
    )
    )
  • (
    (
    -1

    5
    )
    ,
    (
    -1

    6
    )
    )
  • (
    (
    -1

    7
    )
    ,
    1

    6
    )
Question 2
2.
    • Solve
    • (
      2
      x
      +
      4
      y
      22
      )
      =
      0
      (
      2
      x
      +
      5
      y
      23
      )
      =
      0
  • (
    -1
    ,
    2
    )
  • (
    -1
    ,
    4
    )
  • (
    2
    ,
    5
    )
  • (
    0
    ,
    5
    )
  • (
    -1
    ,
    5
    )
Question 3
3.
    • Solve the following pair of equations :
    •    
       
       
      13

       
       
      x
        +  
       
       
      13

       
       
      y
      =
       
       
      (
      13
      )
    •  
       
      2

       
       
      x
        +  
       
       
      12

       
       
      y
      =
       
       
      86
  • (
    1

    7
    ,
    1

    4
    )
  • (
    1

    7
    ,
    (
    -1

    6
    )
    )
  • (
    3

    7
    ,
    1

    6
    )
  • (
    1

    7
    ,
    1

    6
    )
  • (
    1

    9
    ,
    1

    6
    )
Question 4
4.
    • Solve
    • (
      5
      x
      +
      3
      y
      +
      1
      )
      =
      4
      (
      4
      x
      +
      4
      y
      5
      )
      =
      4
  • (
    (
    -15

    32
    )
    ,
    57

    32
    )
  • (
    (
    -13

    32
    )
    ,
    11

    6
    )
  • (
    (
    -13

    32
    )
    ,
    55

    32
    )
  • (
    (
    -15

    34
    )
    ,
    11

    6
    )
  • (
    (
    -15

    34
    )
    ,
    57

    32
    )
Question 5
5.
A motor boat can travel at a speed of 10.43 m/sec downstream and 2.19 m/sec upstream. How much distance can the boat travel in 41.69 sec in still water?
  • 264.06 m
  • 263.06 m
  • 261.06 m
  • 265.06 m
  • 262.06 m
Question 6
6.
    • 1
    • men and
    • 2
    • women can do a piece of work in
    • 12
    • days.
    • 4
    • men and
    • 3
    • women can do the same work in
    • 4
    • days.
    • In how many days can
    • 5
    • men and
    • 4
    • women complete the same work?
  • 3
    1

    7
    days
  • 3
    5

    19
    days
  • 3
    3

    17
    days
  • 3
    3

    19
    days
  • 3
    1

    19
    days
Question 7
7.
    • Solve the following pair of equations :
    •    
       
       
      5
      x
        +  
       
       
      12

       
       
      y
      =
       
       
      20
    •    
       
       
      8
      x
        +  
       
       
      10

       
       
      y
      =
       
       
      (
      14
      )
  • (
    10
    ,
    1

    5
    )
  • (
    9
    ,
    1

    5
    )
  • (
    8
    ,
    (
    -1

    5
    )
    )
  • (
    8
    ,
    1

    3
    )
  • (
    8
    ,
    1

    5
    )
Question 8
8.
    • Solve the following pair of equations :
    • (
      17
      x
      +
      10
      y
      )
      =
      (
      39
      x
      y
      )
    • (
      11
      x
      +
      15
      y
      )
      =
      43
      x
      y
  • (
    1

    10
    ,
    (
    -1

    7
    )
    )
  • (
    1

    8
    ,
    1

    7
    )
  • (
    3

    8
    ,
    (
    -1

    7
    )
    )
  • (
    1

    8
    ,
    (
    -1

    9
    )
    )
  • (
    1

    8
    ,
    (
    -1

    7
    )
    )
Question 9
9.
    • Solve
    • (
      2
      x
      +
      2
      y
      +
      2
      )
      =
      0
      (
      x
      +
      3
      y
      +
      1
      )
      =
      0
  • (
    1

    2
    ,
    (
    -3

    2
    )
    )
  • (
    (
    -1

    4
    )
    ,
    (
    -1

    2
    )
    )
  • (
    1

    2
    ,
    -1
    )
  • (
    (
    -1

    2
    )
    ,
    (
    -1

    2
    )
    )
  • (
    (
    -1

    4
    )
    ,
    -1
    )
Question 10
10.
    • Solve the following pair of equations :
    •  
       
      3

       
       
      (
      x
      6
      )
        +  
       
       
      13

       
       
      (
      y
      3
      )
      =
       
       
      (
      73
      )
    •  
       
      1

       
       
      (
      x
      6
      )
        +  
       
       
      12

       
       
      (
      y
      3
      )
      =
       
       
      (
      78
      )
  • (
    37

    6
    ,
    -2
    )
  • (
    2
    ,
    20

    7
    )
  • (
    37

    6
    ,
    20

    7
    )
  • (
    37

    6
    ,
    -1
    )
  • (
    1
    ,
    20

    7
    )