Class 8 Linear Equations In One Variable CBSE Questions & Answers

Class 8 · Linear Equations In One Variable

This is Mathematics Class 8 Linear Equations in One Variable CBSE Questions & Answers. There are 15 questions in this test with each question having around four answer choices.

Questions & Answers

1
Solve: \(2y + \frac{5}{3} = \frac{{26}}{3} - y\)
  • A
    2
  • B
    \(\frac{7}{3}\)
    Correct
  • C
    3
  • D
    4
2
Solve: \(\frac{{8x - 3}}{{3x}} = 2\)
  • A
    \(\frac{1}{2}\)
  • B
    2
  • C
    \(\frac{3}{2}\)
    Correct
  • D
    \(\frac{1}{4}\)
3
A linear equation may have for its _____ any rational number.
  • A
    reason
  • B
    question
  • C
    solution
    Correct
  • D
    none of these
4
Bansi has 3 times as many two-rupee coins as he has five-rupee coins. If he has in all a sum of Rs 77, how many coins of each denomination does he have?
  • A
    7, 14
  • B
    14, 21
  • C
    7, 21
    Correct
  • D
    21, 14
5
Two numbers are in the ratio 5:3. If they differ by 18, what are the numbers?
  • A
    45 and 30
  • B
    none of these
  • C
    27 and 40
  • D
    45 and 27
    Correct
6
A positive number is 5 times another number. If 21 is added to both the numbers, then one of the new numbers becomes twice the other new number. What are the numbers?
  • A
    None of these
  • B
    7, 35
    Correct
  • C
    7, 39
  • D
    14, 35
7
Solve: 6 = z + 2
  • A
    8
  • B
    4
    Correct
  • C
    none of these
  • D
    -8
8
Solve: 8y = 32
  • A
    40
  • B
    3
  • C
    24
  • D
    4
    Correct
9
Solve: 4z + 3 = 6 + 2z
  • A
    1
  • B
    2
  • C
    \(\frac{1}{2}\)
  • D
    \(\frac{3}{2}\)
    Correct
10
Solve: \(3m = 5m - \frac{8}{5}\)
  • A
    \(\frac{4}{5}\)
    Correct
  • B
    0.2
  • C
    0.25
  • D
    0.5
11
Solve: \(\frac{z}{{z + 15}} = \frac{4}{9}\)
  • A
    none of these
  • B
    13
  • C
    14
  • D
    12
    Correct
12
The equations are linear, i.e., the highest power of the variable appearing in the equation is ________.
  • A
    2
  • B
    1
    Correct
  • C
    0
  • D
    none of these
13
The sum of three consecutive multiples of 11 is 363. Find these multiples.
  • A
    110, 144, 132
  • B
    110, 121, 132
    Correct
  • C
    none of these
  • D
    110, 121, 1143
14
Three consecutive integers add up to 51. What are these integers?
  • A
    none of these
  • B
    16, 17 and 18
    Correct
  • C
    14, 15 and 16
  • D
    15, 16 and 17
15
Sum of the digits of a two-digit number is 9. When we interchange the digits, it is found that the resulting new number is greater than the original number by 27. What is the two-digit number?
  • A
    36
    Correct
  • B
    24
  • C
    25
  • D
    -25