Short Tricks to Remember Ratio to Percentage Table Part 4

Duration: 8 min

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Module outline

  1. English Comprehension: Comprehension / Reading Comprehension / Unseen Passages (Critical Reasoning) (Paragraph Questions), Reading Comprehension, Vocabulary, Idioms and Phrases, Narrative Sequencing, Critical Reasoning
  2. Reasoning and Aptitude: Series (Number and Letter Series) (Numerical Relations and Reasoning), Coding Decoding, Analogy, Non Verbal Reasoning (Spatial Aptitude) (Spatial Reasoning) (Visual Reasoning), Blood Relations, Directions (Direction Test), Ranking, Order and Sequence, Logical Sequence Of Words, Seating Arrangements, Puzzle Solving (Puzzles), Syllogisms, Deductive and Inductive Reasoning (Logical Deduction and Induction) (Prepositional Reasoning), Data Sufficiency, Selection Decision Table (Decision Making), Calendar, Clock, Cubes & Dices, Data Arrangement, Venn Diagram, Analytical Reasoning (Counting Figures Reasoning), Number System, HCF LCM, Percentage, Ratio and Proportion (Ratios), Average, Profit and Loss, Simple Interest and Compound Interest, Speed Time and Distance, Mensuration and Geometry, Arithmetic, Mixture and Alligation, Age Problems, Data Interpretation, Alphabet and Word Tests, Numerical Reasoning, Number System, Averages, Mixtures and Alligation, Percentages, Series Completion, Analogy and Classification, Patterns in Two-Dimensional Figures, Coding and Decoding, Mathematical Operations, Direction Sense, Logical Deduction and Induction, Simplification and Approximation, Assembling and Grouping of Shapes, Transformation of Shapes, Three-Dimensional Patterns and Visualization, Cubes and Dice, Algebra, Traverse Surveying, Clocks and Calendars, Order, Ranking and Sequence, Constraint Puzzles, Syllogisms and Venn Diagrams, Ratio and Proportion, Mensuration, Permutations and Combinations, Project Monitoring, Resources and Safety, Profit, Loss and Discount, Sequences and Series, Powers, Surds and Logarithms, Subject-Verb Agreement, Sentence Completion, Geometry, Probability, Trigonometry, Measurement and Quantity Take-Off, Statistics, Data Sufficiency, Blood Relations, Speed, Time and Distance, Time and Work, Data Interpretation, Sequence and Series (Series), Algebra, Permutation and Combination, Combinatorics
  3. General Awareness: Physics, Chemistry, Biology, Geography, History, Polity, Indian Economy
  4. Computer Fundamentals: Basics of COA, Number System, Number Representation, Semiconductor Memories and Programmable Logic, Timing, Hazards and Testing, Processor Organization and Instructions, Number Systems and Codes, Combinational Logic Design, Combinational Logic Circuits, Number Systems and Codes
  5. Operating System: Introduction to OS, Unix OS, Linux OS
  6. C Programming: C Fundamentals, Control Flow, Functions, Arrays & Pointers, Storage Classes, Structures & Enums, DMA, Macros, Scoping & File Handling
  7. OOPS with C++ & Java: OOPS with C++, Java
  8. Database Management System: Basics of DBMS, SQL
  9. MS Office: MS Office Applications
  10. Internet & Web Technologies: Website, Browser & Services, Internet Fundamentals, Web Design & Development, Protocols & Services
AI summary & chapters

AI Summary

An AI-generated summary of this video lecture.

This educational video provides a comprehensive guide to converting ratios into percentages, with a strong emphasis on memorization techniques for competitive exams. The instructor, Yash Jain, begins by presenting a detailed table of common ratios and their corresponding percentage values. The lesson progresses from basic fractions like 1/2 and 1/4 to more complex ones like 1/7 and 1/11. A significant portion of the video is dedicated to a specific trick for calculating multiples of 1/7, utilizing a multiplication method to recall the repeating decimal sequence 142857. The visual aids include chalkboard-style graphics, data tables, and handwritten calculations on a digital whiteboard to reinforce the concepts.

Chapters

  1. 0:00 – 2:00 00:00-02:00

    The video opens with a title card reading 'PERCENTAGE' followed by an introduction slide 'PERCENTAGES - By YASH JAIN'. The instructor introduces the topic and displays a 'RATIO TO PERCENTAGE TABLE'. This table lists fundamental ratios such as 1/1, 1/2, 1/3, 1/4, 1/5, 1/8, 1/16, and 1/32 alongside their percentage equivalents like 100%, 50%, 33.33%, 25%, 20%, 12.5%, 6.25%, and 3.125%. The instructor likely reviews these standard conversions to establish a baseline for the lesson.

  2. 2:00 – 5:00 02:00-05:00

    The 'RATIO TO PERCENTAGE TABLE' expands to include more complex fractions. The instructor displays values for 1/6 (16.67%), 1/7 (14.2857%), 1/8 (12.50%), 1/9 (11.11%), 1/10 (10%), 1/11 (9.09%), and 1/12 (8.33%). The table continues with ratios like 1/17 (5.88%), 1/18 (5.55%), 1/19 (5.22%), 1/20 (5.00%), and extends to 1/25 through 1/37. The instructor emphasizes memorizing these specific percentage values, such as 1/7 being approximately 14.2857%, to facilitate quick mental math during problem-solving.

  3. 5:00 – 8:14 05:00-08:14

    The lesson focuses specifically on the fraction 1/7 and its multiples. The table shows 1/7 (14.2857%), 2/7 (28.5714%), 3/7 (42.8571%), 4/7 (57.1428%), 5/7 (71.4285%), 6/7 (85.7142%), and 7/7 (100%). The instructor writes multiplication equations on the screen, such as '14 x 1 = 14', '14 x 2 = 28', and '14 x 3 = 42', to demonstrate a trick for finding the first two digits of the percentage. He explains the cyclic pattern of the digits 142857 and categorizes numerators as even or odd to help students remember the sequence. He also notes that knowing tables up to 25 is a prerequisite for this method.

The video systematically builds a student's ability to convert ratios to percentages by first establishing a foundation of common fractions and then introducing advanced memorization tricks. The progression moves from a general reference table covering ratios from 1/1 to 1/37 to a deep dive into the specific properties of the fraction 1/7. By breaking down the repeating decimal 142857 and linking it to simple multiplication tables, the instructor provides a practical tool for rapid calculation. This structured approach ensures that learners not only memorize values but also understand the underlying patterns, making the content highly effective for exam preparation.

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