NCERT Solutions for Class 8 Mathematics Chapter 13
Important NCERT Questions
Direct and Inverse Proportions Chapter 8 Exercise 13.1
NCERT Books for Session 2022-2023
CBSE Board
Questions No: 3
In Question 2, if 1 part of a red pigment requires 75 mL of base, how much red pigment should we mix with 1800 mL of base?
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Let the parts of red pigment mix with 1800 mL base be x.
Parts of red pigment 1 x
Parts of base 75 1800
Since it is in direct proportion.
∴ 1/75 = x/1800 ⇒ 75Xx=1×1800 ⇒ x= 1×1800/75=24
Hence, with base 1800 mL, 24 parts red pigment should be mixed.
Class 8 Maths Chapter 11 Exercise 13.1 Solution in Video
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https://www.tiwariacademy.com/ncert-solutions/class-8/maths/chapter-13/