Test: Linear Equations in One Variable- 2


15 Questions MCQ Test Mental Mathematics | Test: Linear Equations in One Variable- 2


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Attempt Test: Linear Equations in One Variable- 2 | 15 questions in 30 minutes | Mock test for Class 7 preparation | Free important questions MCQ to study Mental Mathematics for Class 7 Exam | Download free PDF with solutions
QUESTION: 1

Sum of ages of 5 friends is n years. What is the sum of their ages after 3 years?

Solution:

(n + 15 ) years

QUESTION: 2

Form an expression: when twice a number x is added to thrice its reciprocal.

Solution:

2x + 3/x

QUESTION: 3

Give a number which is always even in terms of variable x.

Solution:
QUESTION: 4

Form an equation for a multiple of 5 added to 19 is 54.

Solution:

5x + 19 = 54

QUESTION: 5

48 sweets are to be distributed among three friends A, B and C in such a way that. B gets 5 sweets more than A and C gets 7 sweets more than A. Form an equation.

Solution:

3x + 12 = 48

QUESTION: 6

Find x if 2x + 5 = x + 25.

Solution:
QUESTION: 7

If x = n + 1 then find the value o f (2x + 5) 

Solution:

2n + 7

QUESTION: 8

Ratio of three angles of a triangle is 1 : 2 : 3. Find the angles.

Solution:

30°, 60°, 90°

QUESTION: 9

Preeti has three more dolls than Renu. If there are 11 dolls in all, how many dolls does each have?

Solution:
QUESTION: 10

Sum of two numbers is 30. If one number is twice the other, form an equation for finding the numbers.

Solution:

2x + x = 30

QUESTION: 11

Perimeter of the top of a table in the conference hall is 32m. If the length of the table is 3 times its breadth, how long is the table?

Solution:
QUESTION: 12

3(x + 4) = x + 38 find x.

Solution:
QUESTION: 13

If father is twice as old as his son and also 29 years older than his son. What is the age of father?

Solution:

58 years

QUESTION: 14

Two numbers are in the ratio 4:7. If the sum of numbers is 143, find the numbers.

Solution:

52, 91

QUESTION: 15

Find three consecutive odd numbers whose sum is 147.

Solution:

47, 49, 51

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