AP Board Class 8 Maths Chapter 10 Direct and Inverse Proportions Ex 10.4 Textbook Solutions PDF: Download Andhra Pradesh Board STD 8th Maths Chapter 10 Direct and Inverse Proportions Ex 10.4 Book Answers ~ HSSlive: Plus One & Plus Two Notes & Solutions for Kerala State Board

AP Board Class 8 Maths Chapter 10 Direct and Inverse Proportions Ex 10.4 Textbook Solutions PDF: Download Andhra Pradesh Board STD 8th Maths Chapter 10 Direct and Inverse Proportions Ex 10.4 Book Answers

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Andhra Pradesh Board Class 8th Maths Chapter 10 Direct and Inverse Proportions Ex 10.4 Textbooks Solutions PDF

Andhra Pradesh State Board STD 8th Maths Chapter 10 Direct and Inverse Proportions Ex 10.4 Books Solutions with Answers are prepared and published by the Andhra Pradesh Board Publishers. It is an autonomous organization to advise and assist qualitative improvements in school education. If you are in search of AP Board Class 8th Maths Chapter 10 Direct and Inverse Proportions Ex 10.4 Books Answers Solutions, then you are in the right place. Here is a complete hub of Andhra Pradesh State Board Class 8th Maths Chapter 10 Direct and Inverse Proportions Ex 10.4 solutions that are available here for free PDF downloads to help students for their adequate preparation. You can find all the subjects of Andhra Pradesh Board STD 8th Maths Chapter 10 Direct and Inverse Proportions Ex 10.4 Textbooks. These Andhra Pradesh State Board Class 8th Maths Chapter 10 Direct and Inverse Proportions Ex 10.4 Textbooks Solutions English PDF will be helpful for effective education, and a maximum number of questions in exams are chosen from Andhra Pradesh Board.

Andhra Pradesh State Board Class 8th Maths Chapter 10 Direct and Inverse Proportions Ex 10.4 Books Solutions

Board	AP Board
Materials	Textbook Solutions/Guide
Format	DOC/PDF
Class	8th
Subject	Maths
Chapters	Maths Chapter 10 Direct and Inverse Proportions Ex 10.4
Provider	Hsslive

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AP Board Class 8th Maths Chapter 10 Direct and Inverse Proportions Ex 10.4 Textbooks Solutions with Answer PDF Download

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Question 1.
Rice costing ₹480 is needed for 8 members for 20 days. What is the cost of rice required for 12 members for 15 days?
Solution:
Method – 1: Number of men and rice required to them are in inverse proportion.
Number of men ∝ 1 No. of days

⇒ Compound ratio of 8:12 and 20: 15
= 812=2015 = 89 …………….. (2)
From (1), (2)
480 : x = 8 : 9
⇒ 480𝑥=89
⇒ x = 480×98 = ₹540
∴ The cost of required rice is ₹ 540

Method – II :
𝑀1𝐷1𝑊1=𝑀2𝐷2𝑊2
M₁= No. of men
D₁ = No .of days
W₁ = Cost of rice
∴ M₁ = 8
D₁ = 20
W₁ = ₹ 480
M₂ = 12
D₂ = 15
W₂ = ? (x)

⇒ x = 45 x 12 = ₹ 540
The cost of required rice = ₹ 540/-

Question 2.
10 men can lay a road 75 km. long in 5 days. In how many days can 15 men lay a road 45 km. long?
Solution:
𝑀1𝐷1𝑊1=𝑀2𝐷2𝑊2
∴ M₁ = 10
D₁ = 5
W₁ = 75
M₂ = 15
D₂ = ?
W₂ = 45

∴ x = 2
∴ No. of days are required = 2

Question 3.
24 men working at 8 hours per day can do a piece of work in 15 days. In how many days can 20 men working at 9 hours per day do the same work?
Solution:
M₁D₁H₁ = M₂D₂H₂
∴ M₁ = 24
D₁ = 15 days
H₁ = 8 hrs
M₂ = 20
D₂ = ?
H₂ = 9 hrs
⇒ 24 × 15 × 8 = 20 × x × 9

∴ No. of days are required = 16
[ ∵ No. of men and working hours are in inverse]

Question 4.
175 men can dig a canal 3150 m long in 36 days. How many men are required to dig a canal 3900 m. long in 24 days?
Solution:
𝑀1𝐷1𝑊1=𝑀2𝐷2𝑊2
M₁ = 175
D₁ = 36
W₁ = 3150
M₂ = ?
D₂ = 24
W₂ = 3900

∴ No. of workers are required = 325

Question 5.
If 14 typists typing 6 hours a day can take 12 days to complete the manuscript of a book, then how many days will 4 typists, working 7 hours a day, can take to do the same job?
Solution:
M₁D₁H₁ = M₂D₂H₂
M₁ = 14
D₁ = 12 days
H₁ = 6
M₂ = 4
D₂ = ?
H₂ = 7
⇒ 14 × 12 × 6 = 4 × x × 7

⇒ x = 36
∴ No. of days are required = 36
[ ∵ No of men and working hours are in inverse proportion]

AP Board Textbook Solutions PDF for Class 8th Maths

Andhra Pradesh Board Class 8th Maths Chapter 10 Direct and Inverse Proportions Ex 10.4 Textbooks for Exam Preparations

Andhra Pradesh Board Class 8th Maths Chapter 10 Direct and Inverse Proportions Ex 10.4 Textbook Solutions can be of great help in your Andhra Pradesh Board Class 8th Maths Chapter 10 Direct and Inverse Proportions Ex 10.4 exam preparation. The AP Board STD 8th Maths Chapter 10 Direct and Inverse Proportions Ex 10.4 Textbooks study material, used with the English medium textbooks, can help you complete the entire Class 8th Maths Chapter 10 Direct and Inverse Proportions Ex 10.4 Books State Board syllabus with maximum efficiency.

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