Simple Interest Basic Concepts & Formulas

Duration: 16 min

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Inside: a video lesson and guided study material.

Module outline

  1. About the Course: About the Course
  2. Section 1 | Language (Hindi): भाषा, लिपि, ध्वनि, वर्ण, अक्षर, स्वर, व्यंजन, मात्रा और संयुक्ताक्षर, वर्तनी, वर्ण-विन्यास, अनुस्वार, अनुनासिक, चंद्रबिंदु और ‘र’ के रूप, शब्द, पद और शब्द-भेद, संज्ञा और सर्वनाम, विशेषण और क्रिया, लिंग, वचन, पुरुष और कारक, काल, वाच्य, वाक्य और वाक्य-भेद, संधि, समास, विलोम शब्द, पर्यायवाची शब्द, सामान्य अशुद्धियाँ, अनेक शब्दों के लिए एक शब्द, मुहावरे और लोकोक्तियाँ, अपठित गद्यांश और अपठित पद्यांश, Multi-Topic Content (Cross-Concept Material), वर्णमाला
  3. Section 1 | Language (उर्दू भाषा — 22 प्रश्न (निश्चित)): Spelling & Diacritics, Grammar (اسم, فعل, صفت, ضمیر), Vocabulary, Idioms & Proverbs, Comprehension
  4. Section 1 | Language (বাংলা / बांग्ला भाषा — 22 प्रश्न (निश्चित)): Bangla Script and Sounds, Bangla Grammar and Usage, Bangla Word Formation and Vocabulary, Reading and Text Interpretation
  5. Section 1 | Language (English): Vocabulary, Noun, Subject Verb Agreement (Verb Noun Agreement), Adjectives, Tenses, Pronoun, Verb, Adverb, Preposition, Articles, Determiner, Conjunction, Modals, Active Passive Voice (Voice), Direct and Indirect Speech, Sentence Correction (Error Correction), Sentence Completion (Fill in the blanks), Sentence Construction, Sentence Re-arrangements (Para Jumbles) (Narrative Sequencing), Comprehension / Reading Comprehension / Unseen Passages (Critical Reasoning) (Paragraph Questions), Cloze Test (Cloze Passage), Verbal Analogy (Word Based Analogy), Facts, Inference and Judgements
  6. Section 2 | Primary Maths & Reasoning: Ratio and Proportion (Ratios), Divisibility Rules, Mixture and Alligation, Permutation and Combination, Number System, HCF LCM, Sequence and Series (Series), Speed Time and Distance, Series (Number and Letter Series) (Numerical Relations and Reasoning), Coding Decoding, Non Verbal Reasoning (Spatial Aptitude) (Spatial Reasoning) (Visual Reasoning), Percentage, Average, Profit and Loss, Simple Interest and Compound Interest, Time and Work, Mensuration and Geometry, Age Problems, Arithmetic, Powers and Exponents (Surds and Indices), Algebra, Probability, Trigonometry, Syllogisms, Seating Arrangements, Blood Relations, Directions (Direction Test), Analytical Reasoning (Counting Figures Reasoning), Puzzle Solving (Puzzles), Calendar, Clock, Cubes & Dices, Venn Diagram, Data Arrangement, Inequality, Analogy, Ranking, Order and Sequence
  7. Section 2 | General Awareness (GK + Current Affairs): Polity, Physics, Biology, State Wise GK, Chemistry, History, Geography, Indian Economy, Environment, GK- Current Affairs, Static General Knowledge
  8. Section 3 | Computer System and Org. (CSO): Basics of COA, Floating Point Rep, Cache Memory Organization, Instr Formats & Modes, Programming the Basic Computer, Input Output Organisation, Register Transfer and Microoperations, Control Unit Design
  9. Section 3 | Database Management System: Basics of DBMS, ER Diagram, Relational Model & Functional Dependencies, Keys & Integrity Constraints, Normalization (1NF - BCNF), Decomposition Properties & 4NF, SQL, File Organization & Indexing, Relational Algebra, Relational Calculus, Transaction Management, Concurrency Control
  10. Section 3 | Operating System: Introduction to OS, Process Management, CPU Scheduling, Threads & Process Creation, Memory Management, Virtual Memory, Disc Scheduling, File Management, Process Synchronization
  11. Section 3 | Computer Networks: Introduction to CN, Data Communication, DLL: Access Control, DLL: Flow Control, DLL: Error Control, Data Link Layer - Ethernet, Net Layer: IPv4 & Proto, Net Layer: IP Addressing, Transport Layer Services, TL: Congestion & UDP, Application Layer, Hardware basics
  12. Section 3 | Data Structures: Introduction to DS, Array, Stack, Queue, Linked List, Tree, Graphs, Hashing, Algorithm Analysis, Time Complexity Analysis, Sorting Algorithms, Greedy Algorithms, Minimum Spanning Trees, Shortest Path Algos
  13. Section 3 | Theory Of Computation & Compiler Design: Introduction to TOC, Deterministic FA (DFA), Non-Deterministic FA, Regular Expressions, Grammar, Regular Language Properties, Moore & Mealy Machines, Pushdown Automata & CFG, Turing Machines, Intro to Compilers, Lexical Analysis, Grammar & CFG, Syntax Analysis: Top-Down, Syntax Analysis: Bottom-Up, Semantic Analysis & SDT, Intermediate Code Gen, Code Optimization
  14. Section 3 | Emerging Trends (AI, Societal Ethics & MS Office): Artificial Intelligence, Emerging Tech Trends, Society, Law & Ethics, MS Office Applications
  15. Section 3 | Software Engineering: Fundamentals of Software Engineering, Software Requirements and Quality Assurance, Software Design, Estimation and Metrics, Software Maintenance and Configuration Management, Software Testing
  16. Section 3 | C Programming: C Fundamentals, Control Flow, Functions, Arrays & Pointers, Storage Classes, Structures & Enums, DMA, Macros, Scoping & File Handling
  17. Section 3 | OOPS, C++, JAVA, HTML: OOPS with C++, Java, HTML Basics, CSS
  18. Section 3 | Java: Java Fundamentals, Array, String, IO & References
  19. Section 3 | Python: Introduction to Python, Tokens, Variables, Data Types, I/O, Operators & Expressions, Control Flow & Looping, Collections & Strings, Functions & Modules, File Handling & Data Analysis
  20. Section 3 | Digital Electronics: Digital Systems & Boolean Basics, Logic Gates & Hardware, Boolean Expression, Boolean Minimization, Combinational Circuit, Sequential Circuits, Number System, Number Representation
  21. Section 3 | Multimedia: Multimedia
  22. BPSC Previous Year Papers:
  23. BPSC Full Mock Tests:
AI summary & chapters

AI Summary

An AI-generated summary of this video lecture.

This educational video provides a comprehensive lesson on Simple Interest, a fundamental concept in finance. The instructor begins by introducing the topic with a title slide and then proceeds to define the key variables: Principal (P), Rate of Interest (R), and Time (T). The core formula for calculating Simple Interest (SI) is derived step-by-step as SI = (P * R * T) / 100. The video uses a practical example with a principal of Rs. 100, a rate of 6% per annum, and a time of 3 years to demonstrate the calculation, showing that the interest for each year is Rs. 6, leading to a total interest of Rs. 18. The concept of the total amount (A), which is the sum of the principal and the interest (A = P + SI), is also explained. The lesson then moves to a problem-solving section, where the instructor demonstrates how to find the principal when the amount, rate, and time are known, using the formula P = (Amount * 100) / (100 + R*T). A final example calculates the amount and interest on a principal of Rs. 6000 at 6% for 2 years, resulting in an interest of Rs. 720 and a total amount of Rs. 6720. The video concludes with a 'Thank You' screen.

Chapters

  1. 0:00 – 2:00 00:00-02:00

    The video opens with a title slide featuring the text 'SIMPLE AND COMPOUND INTEREST' over an image of coins and a graph. This transitions to a presentation slide with a title 'Simple Interest and Compound Interest' and a subtitle 'Basic To Advance - by YASH JAIN'. The slide includes a visual of a house made from a dollar bill and stacks of coins. The instructor, Yash Jain, appears in a small window in the bottom right corner. The main content slide is titled 'Simple Interest' and has a decorative background with confetti. A copyright notice for 'KNOWLEDGE GATE EDUVENTURES' is visible at the bottom of the screen.

  2. 2:00 – 5:00 02:00-05:00

    The instructor begins the lesson by writing the formula for Simple Interest on the screen. He defines the variables: P = Rs. 100 (Principal), R = 6% (Rate of Interest), and T = 3 years (Time). He explains that the interest for one year is calculated as R% of P, which is 6% of 100, resulting in Rs. 6. He then shows that for 3 years, the total interest is 3 times the annual interest, which is 3 * 6 = Rs. 18. The total amount is calculated as Principal + Interest, which is 100 + 18 = Rs. 118. The instructor then derives the general formula for Simple Interest: SI = (P * R * T) / 100.

  3. 5:00 – 10:00 05:00-10:00

    The instructor continues to explain the formula for Simple Interest, writing it as SI = (P * R * T) / 100. He then shows how to calculate the total amount (A) as A = P + SI, which simplifies to A = P(1 + RT/100). He demonstrates how to find the principal (P) when the amount (A), rate (R), and time (T) are known, using the formula P = (Amount * 100) / (100 + R*T). He provides an example where the amount is Rs. 112, the rate is 6% per annum, and the time is 2 years. He calculates the total interest as 12% of the principal, leading to the equation 112 = P + 0.12P, which simplifies to 112 = 1.12P. He then solves for P, finding the principal to be Rs. 100.

  4. 10:00 – 15:00 10:00-15:00

    The instructor presents a new problem: 'Find the amount & simple interest on Rs. 6000 at the rate of 6% per annum for 2 years?'. He identifies the values: P = Rs. 6000, R = 6%, T = 2 years. He calculates the total interest as 12% of the principal, which is 12% of 6000. He shows the calculation: (6000 * 6 * 2) / 100 = 720. The simple interest (SI) is Rs. 720. He then calculates the total amount (A) as P + SI, which is 6000 + 720 = Rs. 6720. He also shows an alternative method by calculating the interest for one year (6% of 6000 = 360) and then for two years (2 * 360 = 720).

  5. 15:00 – 15:37 15:00-15:37

    The video concludes with a final slide that displays the text 'THANK YOU FOR WATCHING' in large, orange and white letters against a black background. This is the end screen of the educational video, signaling the completion of the lesson on Simple Interest.

The video provides a clear and structured lesson on Simple Interest, progressing from foundational definitions to complex problem-solving. It begins by establishing the core formula, SI = (P * R * T) / 100, and uses a concrete example to illustrate the concept of interest accumulation over time. The instructor effectively demonstrates the derivation of the formula and its application in various scenarios, including finding the total amount and the principal when other variables are known. The use of step-by-step calculations and multiple examples ensures a comprehensive understanding of the topic, making it suitable for students learning financial mathematics.

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