NCERT Solutions for Class 8 Maths Chapter 13

NCERT Solutions for Class 8 Maths Chapter 13 DIRECT AND INVERSE PROPORTIONS Exercise 13.1 and Exercise 13.2 in English Medium, Hindi Medium as well as Video Explanations updated for new academic session 2020-2021 based on new NCERT Books 2020-21.

Download प्रश्नावली 13.1 and प्रश्नावली 13.2 in Hindi Medium free to use online or download in PDF. NCERT Solutions 2020-2021 are updated according to NCERT Books 2020-21. All the students can use this NCERT Solutions by downloading or use it online. These are based on latest CBSE Syllabus 2020-21 in updated form.

NCERT Solutions for Class 8 Maths Chapter 13

Class:8
Subject:Maths – गणित
Chapter 13:Direct and Inverse Proportions

Class 8 Maths Chapter 13 Solutions

Class 8 Maths Chapter 13 Direct and Inverse Proportions all exercises in English Medium as well as Hindi Medium are given below to download in PDF form. For any inconvenience regarding website, please call us, we will immediately solve the problem. Offline apps 2020-21 are more helpful in case of slow internet.

Class 8 Maths Exercise 13.1 & 13.2 Solutions in Video

Class 8 Maths Exercise 13.1 Solutions in Video
Class 8 Maths Exercise 13.2 Solutions in Video
The number of workers on a job and the time to complete the job. Is it inverse or direct proportion?

The number of workers and the time to complete the job is in inverse proportion because less workers will take more time to complete a work and more workers will take less time to complete the same work.

If a box of sweets is divided among 24 children, they will get 5 sweets each. How many would each get, if the number of the children is reduced by 4?

Each child gets = 5 sweets,
So, 24 children will get 24 x 5 = 120 sweets
Total number of sweets = 120
If the number of children is reduced by 4, then children left = 24 – 4 = 20
Now, each child will get sweets = 120/20 = 6 sweets

एक निश्चित यात्रा में लिया गया समय और वाहन की चाल, प्रत्यक्ष समानुपात है या प्रतिलोम समानुपात है?

यहाँ प्रतिलोम समानुपात है क्योंकि यदि वाहन की चाल अधिक होगी तो यात्रा में लिया गया समय कम होगा।

किसी स्कूल में, 45 मिनट अवधि के 8 कालांश होते हैं। यह कल्पना करते हुए कि स्कूल का कार्य समय उतना ही रहता है, यदि स्कूल में बराबर अवधि के 9 कालांश हों, तो प्रत्येक कालांश कितने समय का होगा?

माना, प्रत्येक कालांश का समय = y
क्योंकि कालांश की संख्या, कालांश के समय के प्रतिलोम अनुपात में है। अतः
8/9 = y/45
इसलिए, 9 x y = 45 x 8
इसप्रकार,
y = [45 x 8]/9
= 40 मिनट
अतः, यदि स्कूल में बराबर अवधि के 9 कालांश हों, तो प्रत्येक कालांश 40 मिनट का होगा।

More about Class 8 Maths Chapter 13

In Chapter 13 Direct and Inverse Proportions, we will study the applications in daily life. When the two quantities increase or decrease simultaneously, it is called Direct Proportion whereas if other quantity decreases for increasing values of one quantity, is is called inverse proportion. In this chapter most of the word problems are based on daily life only and easier way to solve them is also given. According to the Textbook, it is advised that first of all make table of the given quantities and then check the ratio to judge, whether the quantities are in direct or inverse proportions, then go for solutions.

Working Rules

विद्यार्थी पहले दी गई राशियों की एक सरणी बना लें और फिर जाँच ले कि दोनों राशियाँ साथ साथ बढ़ रहीं हैं या एक बढ़ रही और दूसरी घट रही है। उदहारण के लिए हम अनार के मूल्य को ही लें। जैसे – जैसे आनर की मात्रा में वृद्धि होती है, वैसे – वैसे उसके मूल्य में भी वृद्धि होती है। अतः यहाँ सीधा अनुपात है अर्थात अनार की मात्रा और उसका मूल्य अनुक्रमनुपाती हैं।

NCERT Solutions for Class 8 Maths Chapter 13 DIRECT AND INVERSE PROPORTIONS
NCERT Solutions for Class 8 Maths Chapter 13 Exercise 13.1
NCERT Solutions for Class 8 Maths Chapter 13 Exercise 13.1 in pdf form free
NCERT Solutions for Class 8 Maths Chapter 13 Exercise 13.1 in english medium
NCERT Solutions for Class 8 Maths Chapter 13 Exercise 13.2
NCERT Solutions for Class 8 Maths Chapter 13 Exercise 13.2 in pdf
NCERT Solutions for Class 8 Maths Chapter 13 Exercise 13.2 in english medium
NCERT Solutions for Class 8 Maths Chapter 13 Exercise 13.2 free download
8 Maths Ex. 13.1 Solutions in hindi medium
8 Maths Ex. 13.1 Solutions in pdf form free download
8 Maths Ex. 13.1 Solutions
8 Maths Ex. 13.1 Solutions for 2018-19 mp cbse board
8 Maths Ex. 13.2 Solutions
8 Maths Ex. 13.2 Solutions in pdf form
8 Maths Ex. 13.2 Solutions in hindi medium
8 Maths Ex. 13.2 Solutions all questions free guide