SHORT TRICK -Adding Ingredient to Increase Concentration

Duration: 7 min

This video lesson is available to enrolled students.

Return to /learn/RSSB-BASIC-COMPUTER-INSTRUCTOR/paper-1-basic-numeracy/mixture-and-alligation/concentration-purity-adjustment-problems/asset-short-trick-adding-ingredient-to-increase-concentration after enrolling

Inside: a video lesson and guided study material.

Module outline

  1. About the Course: About the Course
  2. Paper-1 & 2 | Basic Numeracy: Ratio and Proportion (Ratios), Divisibility Rules, Mixture and Alligation, Permutation and Combination, Logarithm, Number System, HCF LCM, Sequence and Series (Series), Speed Time and Distance, Percentage, Average, Mensuration and Geometry, Age Problems, Arithmetic, Statistics, Probability, Profit and Loss, Simple Interest and Compound Interest, Partnership, Speed Mathematics and Basic Mathematics, Algebra, Powers and Exponents (Surds and Indices), Time and Work, Pipe and Cistern, RSSB Specific Videos - Basic Numeracy
  3. Paper-1 & 2 | Data Interpretation: Data Interpretation
  4. Paper-1 & 2 | General Mental Ability: Mental Ability, RSSB Specific Videos - Mental Ability
  5. Paper-1 & 2 | Logical Reasoning and Analytical Ability: Series (Number and Letter Series) (Numerical Relations and Reasoning), Coding Decoding, Data Sufficiency, Non Verbal Reasoning (Spatial Aptitude) (Spatial Reasoning) (Visual Reasoning), Syllogisms, Seating Arrangements, Blood Relations, Directions (Direction Test), Analytical Reasoning (Counting Figures Reasoning), Puzzle Solving (Puzzles), Calendar, Clock, Cubes & Dices, Venn Diagram, Analogy, Ranking, Order and Sequence, Deductive and Inductive Reasoning (Logical Deduction and Induction) (Prepositional Reasoning), Data Arrangement, Logical Sequence Of Words, Crypt Arithmetic
  6. Paper-1 & 2 | Decision Making and Problem Solving: Selection Decision Table (Decision Making)
  7. Paper-1 | General Science: Physics, Biology, Chemistry, RSSB Specific Videos
  8. Paper-1 | General Awareness: State Wise GK, GK- Current Affairs
  9. Paper - 2 | Digital Logic Systems: Digital Systems & Boolean Basics, Logic Gates & Hardware, Combinational Circuit, Sequential Circuits
  10. Paper-2 | Database Management System: Basics of DBMS, ER Diagram, Relational Model & Functional Dependencies, Keys & Integrity Constraints, Normalization (1NF - BCNF), Decomposition Properties & 4NF, Relational Calculus, Relational Algebra, SQL, NoSQL
  11. Paper-2 | Data Structures & Algorithms: Introduction to DS, Array, Stack, Queue, Linked List, Tree, Graphs, Algorithm Analysis, Sorting Algorithms, Intro to Compilers, Hashing
  12. Paper 2 | Data Communication and Network Security: Introduction to CN, Data Communication, Data Link Layer - Ethernet, DLL: Error Control, Net Layer: IPv4 & Proto, Net Layer: IP Addressing, Application Layer, Hardware basics, Network Security, Ethical Hacking
  13. Paper-2 | Operating Systems: Introduction to OS, Process Management, Memory Management, File Management, Deadlock
  14. Paper-2 | Computer Organization and Architecture: Basics of COA, Floating Point Rep, Cache Memory Organization, Input Output Organisation, Instr Formats & Modes, Control Unit Design, Register Transfer and Microoperations, Programming the Basic Computer, Number System, Number Representation
  15. Paper 2 | System Analysis and Design: Fundamentals of Systems and Information Systems, Fundamentals of Software Engineering, SDLC and Development Approaches, Software Documentation and Software Requirements Specification (SRS), SDD and Quality Assurance, Security, Risk Management & Maintenance, Software Testing
  16. Paper-2 | C Programming: C Fundamentals, Control Flow, Functions, Arrays & Pointers, Storage Classes, Structures & Enums, DMA, Macros, Scoping & File Handling
  17. Paper 2 | OOPS , C++ , JAVA: Language Design, OOPS with C++, Java, .Net Programming, Java Fundamentals
  18. Paper 2 | Python: Introduction to Python, Tokens, Variables, Data Types, I/O, Operators & Expressions, Control Flow & Looping, Collections & Strings, Functions & Modules, File Handling & Data Analysis
  19. Emerging Trends and AI: Emerging Tech Trends, Artificial Intelligence
  20. Paper-2 | Data Processing (Ms-Office): MS Office Applications
  21. Paper-2 | Internet and Web Technologies: HTML Basics, CSS, XML, JavaScript-Basics, Internet Fundamentals, Protocols & Services, Web Publishing & Hosting, Server Side & Security, Emerging Technologies, Terms & Abbreviations, Cyber Threats and Malware Attacks, Role of Internet and Web Services, Security in Mobile and Wireless Computing
  22. Paper 2 | Pedagogy: Child Development, Theories, Concept of Pedagogy, Inclusive Education, Experiential Pedagogy, Assessment & Evaluation, Psychology, Curriculum Framework & Reforms, National Education Policy (NEP) 2020
  23. Live Classes: RSSB Live Sessions
  24. Paper 1 - Full Mock Tests:
  25. Paper 2 - Full Mock Tests:
  26. BCI Previous Year Papers:
AI summary & chapters

AI Summary

An AI-generated summary of this video lecture.

This educational video, presented by Yash Jain, is a tutorial on solving mixture and alligation problems. The lecture begins with an introduction to the topic, followed by a detailed explanation of a formula for calculating the quantity of an ingredient to be added to increase concentration. The instructor demonstrates this formula with two worked examples: first, calculating how much milk to add to an 80-litre mixture to increase its concentration from 70% to 95%, and second, determining how much lime juice to add to 4 litres of lemon water to increase its concentration from 15% to 20%. The video uses a digital whiteboard for step-by-step calculations, clearly showing the application of the formula: (Quantity of mixture) x (New concentration - Old concentration) / (100 - New concentration). The video concludes with a 'Thanks for Watching' screen.

Chapters

  1. 0:00 – 2:00 00:00-02:00

    The video opens with an animated title card for 'MIXTURES & ALLIGATIONS' by Yash Jain, a Knowledge Gate Educator. The instructor, Yash Jain, appears in a small window and introduces the topic. The main screen displays a slide titled 'Adding an Ingredient to Increase Concentration', setting the stage for the lesson. The instructor begins to explain the concept of increasing the concentration of a component in a mixture by adding more of that component.

  2. 2:00 – 5:00 02:00-05:00

    The instructor presents the first problem: '80 litres of a mixture of milk and water contains 70% milk. How much milk should be added to the mixture so that the percentage of milk becomes 95%?'. He then introduces the formula for the quantity to be added: (Quantity of mixture) x (New concentration - Old concentration) / (100 - New concentration). He writes this formula on the digital whiteboard and substitutes the values from the problem: 80 x (95 - 70) / (100 - 95), which simplifies to 80 x 25 / 5. He calculates the result as 400 litres, explaining that 400 litres of milk must be added.

  3. 5:00 – 6:44 05:00-06:44

    The instructor moves to the second example: '4 litres of lemon water contains 15% lime juice. How much lime juice should be added to increase the concentration to 20%?'. He applies the same formula: 4 x (20 - 15) / (100 - 20). He writes the calculation as 4 x 5 / 80, which simplifies to 20 / 80, resulting in 0.25 litres. The video concludes with a 'THANKS FOR WATCHING' screen.

The video provides a clear, step-by-step tutorial on solving mixture problems where the goal is to increase the concentration of a component. It establishes a universal formula, (Q x (N - O)) / (100 - N), where Q is the quantity of the mixture, N is the new concentration, and O is the old concentration. The instructor effectively demonstrates the application of this formula with two distinct, real-world examples, reinforcing the method through calculation. The progression from a general concept to specific, worked problems ensures a comprehensive understanding of the topic.

Loading lesson…