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NCERT Solutions for Class 7 Maths Chapter 4 Simple Equations Ex 4.4

CBSE students can refer to NCERT Solutions for Class 7 Maths Chapter 4 Simple Equations Ex 4.4 Textbook Questions and Answers are provided by experts in order to help students secure good marks in exams.

Class 7 Maths NCERT Solutions Chapter 4 Simple Equations Ex 4.4

Ex 4.4 Class 7 Maths Question 1.
Set up equations and solve them to find the unknown numbers in the following cases :
(a) Add 4 to eight times a number; you get 60.
(b) One-fifth of a number minus 4 gives 3.
(c) If I take three-fourths of a number and add 3 to it, I get 21.
(d) When I subtracted 11 from twice a number, the result was 15.
(e) Munna subtracts thrice the number of notebooks he has from 50, he finds the result to be 8.
(f) Ibenhal thinks of a number. If she adds 19 to it and divides the sum by 5, she will get 8.
(g) Anwar thinks of a number. If he takes away 7 from \(\frac { 5 }{ 2 } \) of the number, the result is 23.
Solution:
(a) Let x be the required number. Then, the required equation is
NCERT Solutions for Class 7 Maths Chapter 4 Simple Equations 40

(b) Let x be the required number. Then, the required equation is \(\frac { x }{ 5 } \) – 4 = 3.
NCERT Solutions for Class 7 Maths Chapter 4 Simple Equations 41

(c) Let y be the required number. Then, the required equation be \(\frac { 3y }{ 4 } \) + 3 = 21
NCERT Solutions for Class 7 Maths Chapter 4 Simple Equations 42

(d) Let the required number be m. Then, the required equation is 2m -11 = 15
NCERT Solutions for Class 7 Maths Chapter 4 Simple Equations 43

(e) Let Munna have x notebooks. Then, the required equation is 50 – 3x = 8
NCERT Solutions for Class 7 Maths Chapter 4 Simple Equations 44

(f) Let the number be x. Then, the required equation is
NCERT Solutions for Class 7 Maths Chapter 4 Simple Equations 45

(g) Let the number be n. Then, the required equation is
NCERT Solutions for Class 7 Maths Chapter 4 Simple Equations 46
NCERT Solutions for Class 7 Maths Chapter 4 Simple Equations 47

Ex 4.4 Class 7 Maths Question 2.
Solve the following:
(a) The teacher tells the class that the highest marks obtained by a student in her class are twice the lowest marks plus 7. The highest score is 87. What is the lowest score?
(b) In an isosceles triangle, the base angles are equal. The vertex angle is 40°. What are the base angles of the triangle? (Remember, the sum of three angles of a triangle is 180°).
(c) Sachin scored twice as many runs as Rahul. Together, their runs fell two short of a double century. How many runs did each one score?
Solution:
NCERT Solutions for Class 7 Maths Chapter 4 Simple Equations 48

Ex 4.4 Class 7 Maths Question 3.
Solve the following:
(i) Irfan says that he has 7 marbles more than five times the marbles Pannit has. Irfan has 37 marbles. How many marbles does Permit have?
(ii) Laxmi’s father is 49 years old. He is 4 years older than three times Laxmi’s age. What is Laxmi’s age?
(iii) People of Sundargram planted trees in the village garden. Some of the trees were fruit trees. The number of non-fruit trees was two more than three times the number of fruit trees. What was the number of fruit trees planted if the number of non-fruit trees planted was 77?
Solution:
NCERT Solutions for Class 7 Maths Chapter 4 Simple Equations 49

Ex 4.4 Class 7 Maths Question 4.
Solve the following riddle:
I am a number,
Tell me about my identity!
Take me seven times over
And add a fifty!
To reach a triple century
You still need forty!
Solution:
NCERT Solutions for Class 7 Maths Chapter 4 Simple Equations 50

We hope the NCERT Solutions for Class 7 Maths Chapter 4 Simple Equations help you. If you have any query regarding NCERT Solutions for Class 7 Maths Chapter 4 Simple Equations, drop a comment below and we will get back to you at the earliest.

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