Ratio:
- Ratio is a way to compare two or more quantities or numbers. It is the quantitative relationship between two quantities.
- It is expressed in the form of a fraction, using a colon (:) or as a quotient of two numbers.
- For example, if there are 3 red balls and 5 blue balls, the ratio of red balls to blue balls can be written as 3:5 or 3/5.

NCERT Solutions(Part - 1) - Ratio and Proportion:
- NCERT Solutions(Part - 1) is a comprehensive study material that covers the concept of ratio and proportion as per the syllabus prescribed by the National Council of Educational Research and Training (NCERT).
- It provides step-by-step solutions to the exercises and examples given in the NCERT textbook, helping students understand and solve problems related to ratio and proportion.

Importance of Ratio and Proportion:
- Ratio and proportion are fundamental concepts in mathematics and have applications in various real-life situations.
- They help in comparing and relating quantities, understanding patterns, and solving problems involving proportions.
- Ratios are used in various fields such as finance, cooking, architecture, and sports, to name a few.

Key Concepts Covered in NCERT Solutions(Part - 1) - Ratio and Proportion:
- Introduction to ratio and proportion
- Equivalent ratios and their properties
- Comparing ratios
- Unitary method
- Proportions and their properties
- Solving problems using ratios and proportions

Benefits of Using NCERT Solutions(Part - 1) - Ratio and Proportion:
- Provides a comprehensive understanding of the concept of ratio and proportion
- Offers step-by-step solutions to problems, helping students build problem-solving skills
- Helps in preparing for exams by covering all the topics mentioned in the syllabus
- Provides clarity on key concepts through examples and exercises
- Improves mathematical reasoning and logical thinking abilities

Conclusion:
NCERT Solutions(Part - 1) - Ratio and Proportion is a valuable resource for students studying Class 6 mathematics. It covers all the necessary topics related to ratio and proportion and provides step-by-step solutions to problems. By using this study material, students can develop a strong foundation in the concept of ratio and proportion, enhance their problem-solving abilities, and excel in their mathematics examinations.