NCERT Solutions Class 8 Mathematics Solutions for Exercise 13.1 in Chapter 13 - Direct and Inverse Proportions

Question 5 Exercise 13.1

Q3) In question 2 above if 1 part of a red pigment requires 75 ml. of the base, how much red pigment should we mix with 1800 ml. of base.



Let the parts of red pigments mix with 1800 ml. base be x.

NCERT Solutions - Mathematics , Class 8 chapter Direct and Inverse Proportions Question 5 Solution image

Since it is in direct proportion.

Therefore, we obtain

\frac{1}{75}=\frac{x}{1800}\Rightarrow75\times x\ =\ 1\times1800

\Rightarrow\ x\ =\ \frac{1\times1800}{75}=\ 24\ parts.

Thus, 24 parts of the red pigment should be mixed with 1800 ml. base.

Connect with us on social media!
2022 © Quality Tutorials Pvt Ltd All rights reserved