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
The perimeter of a rectangle is 13 cm and its width is \(2\frac{3}{4}\)cm. Find its length.
  • A
    \(3\frac{3}{4}cm\)
    Correct
  • B
    \(\frac{3}{4}cm\)
  • C
    none of these
  • D
    3 cm
2
Aarushi has a total of Rs 590 as currency notes in the denominations of Rs 50, Rs 20 and Rs 10. The ratio of the number of Rs 50 notes and Rs 20 notes is 3:5. If she has a total of 25 notes, how many notes of each denomination she has?
  • A
    10, 10
  • B
    12, 15
  • C
    none of these
  • D
    10, 9
    Correct
3
Arjun is twice as old as Shriya. Five years ago his age was three times Shriya’s age. Find their present ages.
  • A
    10 years, 20 years
    Correct
  • B
    15 years, 20 years
  • C
    10 years, 25 years
  • D
    None of these
4
Solve: \(x--{\text{ 2 }} = {\text{ 7}}\)
  • A
    9
    Correct
  • B
    5
  • C
    none of these
  • D
    -5
5
Solve: 5a = 30
  • A
    35
  • B
    6
    Correct
  • C
    5
  • D
    25
6
Solve: 5t – 3 = 3t – 5
  • A
    2
  • B
    1
  • C
    0
  • D
    -1
    Correct
7
Solve: \(\frac{{2x}}{3} + 1 = \frac{{7x}}{{15}} + 3\)
  • A
    10
    Correct
  • B
    8
  • C
    4
  • D
    6
8
Solve: \(\frac{{3t - 2}}{4} - \frac{{2t + 3}}{3} = \frac{2}{3} - t\)
  • A
    3
  • B
    2
    Correct
  • C
    0
  • D
    4
9
The value of the expression on one side of the equality sign is _____ to the value of the expression on the other side.
  • A
    not equal
  • B
    different
  • C
    none of these
  • D
    equal
    Correct
10
The present age of Sahil’s mother is three times the present age of Sahil. After 5 years their ages will add to 66 years. Find their present ages.
  • A
    14 years, 42 years
    Correct
  • B
    14 years, 56 years
  • C
    28 years, 42 years
  • D
    28 years, 56 years
11
Sum of two numbers is 95. If one exceeds the other by 15, find the numbers.
  • A
    50 and 55
  • B
    40 and 60
  • C
    50 and 60
  • D
    40 and 55
    Correct
12
Amina thinks of a number and subtracts \(\frac{5}{2}\)from it. She multiplies the result by 8. The result now obtained is 3 times the same number she thought of. What is the number?
  • A
    3
  • B
    2
  • C
    none of these
  • D
    4
    Correct
13
Solve: y + 3 = 10
  • A
    13
  • B
    -7
  • C
    7
    Correct
  • D
    none of these
14
Solve: \({\text{7x }} = {\text{ 21}}\)
  • A
    3
    Correct
  • B
    14
  • C
    2
  • D
    None of these
15
Solve: \({\text{5}}x + {\text{ 9 }} = {\text{ 5 }} + {\text{ 3}}x\)
  • A
    -1
  • B
    2
  • C
    -2
    Correct
  • D
    none of these