Short Tricks to solve investment interest problems (2)

Duration: 7 min

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Inside: a video lesson and guided study material.

Module outline

  1. Quantitative Aptitude: Ratio and Proportion (Ratios), Data Interpretation, Mixture and Alligation, Permutation and Combination, Number System, Sequence and Series (Series), Speed Time and Distance, Speed Mathematics and Basic Mathematics, Algebra, Percentage, Profit and Loss, Simple Interest and Compound Interest, Powers and Exponents (Surds and Indices), Time and Work, Mensuration and Geometry, Partnership
  2. Reasoning Ability: Series (Number and Letter Series) (Numerical Relations and Reasoning), Coding Decoding, Data Sufficiency, Seating Arrangements, Deductive and Inductive Reasoning (Logical Deduction and Induction) (Prepositional Reasoning), Directions (Direction Test), Ranking, Order and Sequence, Syllogisms, Blood Relations, Puzzle Solving (Puzzles), Inequality, Machine Input-Output
  3. English Language: Vocabulary, Noun, Subject Verb Agreement (Verb Noun Agreement), Adjectives, Tenses, Comprehension / Reading Comprehension / Unseen Passages (Critical Reasoning) (Paragraph Questions), Cloze Test (Cloze Passage), Sentence Correction (Error Correction), Sentence Completion (Fill in the blanks), Sentence Re-arrangements (Para Jumbles) (Narrative Sequencing), Sentence Construction, Pronoun, Preposition, Conjunction, Adverb, Verb, Modals, Articles, Determiner, Interjection
  4. General Awareness: Evolution of Indian Banking (Banking & Financial Awareness), GK- Current Affairs, Static General Knowledge, Indian Economy
  5. C Concepts + MCQs (IT Specialist): C Programming by Yash Sir, C Language Core
  6. Java (IT Specialist): Java
  7. Python (IT Specialist): Python for Placements by Yash Sir, Python Basics
  8. OOPs (IT Specialist): Object Oriented Programming (OOPS)
  9. DBMS (IT Specialist): Basics of DBMS, ER Diagram, Relational Model & Functional Dependencies, Keys & Integrity Constraints, Normalization (1NF - BCNF), Decomposition Properties & 4NF, File Organization & Indexing, Relational Algebra, Relational Calculus, Transaction Management, Concurrency Control, Database Recovery, ORDBMS, Database Security & Authorization, Query Processing & Optimization, Enhanced Data Models, Data Warehousing & Mining, Big Data Systems, NoSQL
  10. SQL (IT Specialist): SQL
  11. Software Engineering (IT Specialist): Fundamentals of Software Engineering, Software Requirements and Quality Assurance, Software Design, Estimation and Metrics, Software Testing, Software Maintenance and Configuration Management
  12. Data Structure (IT Specialist): Introduction to DS, Array, Stack, Queue, Linked List, Tree, Graphs, Hashing
  13. Operating System (IT Specialist): Introduction to OS, Process Management, CPU Scheduling, Process Synchronization, Deadlock, Threads & Process Creation, Memory Management, Virtual Memory, Disc Scheduling, File Management, Windows OS, Linux OS, Security, Distributed Systems, Virtual Machines
  14. Compiler Design (IT Specialist): Intro to Compilers, Lexical Analysis, Grammar & CFG, Syntax Analysis: Top-Down, Syntax Analysis: Bottom-Up, Semantic Analysis & SDT, Intermediate Code Gen, Code Optimization, Run Time Environment
  15. Computer Architecture (IT Specialist): Basics of COA, Floating Point Rep, Cache Memory Organization, Input Output Organisation, Pipelining, Instr Formats & Modes, Control Unit Design, Register Transfer and Microoperations, Multiprocessors, Programming the Basic Computer
  16. Data Communication & Networking (IT Specialist): Introduction to CN, Data Communication, DLL: Access Control, DLL: Flow Control, DLL: Error Control, DLL: Framing, Data Link Layer - Ethernet, Net Layer: IPv4 & Proto, Net Layer: IP Addressing, Net Layer:Routing Protocol, Transport Layer Services, TL: Congestion & UDP, Application Layer, Hardware basics, Network Security
  17. Descriptive Test (Main Exam): English Writing Ability
AI summary & chapters

AI Summary

An AI-generated summary of this video lecture.

The video is a mathematics lecture by Yash Jain, an educator from Knowledge Gate, focusing on solving problems related to mixtures and alligations. The lecture begins with an introduction to the topic, followed by a discussion on investment interest problems. The main content involves a detailed, step-by-step solution to a specific problem: Rs. 25,000 is lent to two individuals, Babita and Jetha, at different interest rates (18% and 25% respectively), with a total interest of Rs. 5,500. The instructor uses the alligation method to find the amount lent at the 25% interest rate. The solution is demonstrated on a digital whiteboard, showing the calculation of the ratio of the amounts and the final answer. The video concludes with a thank you message.

Chapters

  1. 0:00 – 2:00 00:00-02:00

    The video opens with a title slide for a lecture on "MIXTURES & ALLIGATIONS" by Yash Jain, a Knowledge Gate Educator. The instructor is visible in a small window in the bottom right corner. The slide transitions to a new topic, "INVESTMENT INTEREST PROBLEMS," which is the focus of the lecture. A copyright notice from Knowledge Gate Eduventures is displayed at the bottom of the screen. The instructor begins to explain the problem, setting up the context for the upcoming calculation.

  2. 2:00 – 5:00 02:00-05:00

    The instructor presents a specific problem on the screen: "Rs. 25000 were lent to two persons, Babita & Jetha. Babita paid 18% interest and Jetha paid 25%. If the total interest received was 5500, find the amount lent at 25% interest." The problem is noted as being asked in IBM. The instructor then begins to solve the problem using the alligation method. He writes on a digital whiteboard, setting up the two interest rates (18% and 25%) and the average interest rate (22%). He calculates the difference between the rates and the average, establishing the ratio of the amounts lent to Babita and Jetha as 3:2.

  3. 5:00 – 6:53 05:00-06:53

    The instructor completes the solution to the investment problem. He uses the ratio 3:2 to find the amount lent at 25% interest. He calculates the total parts as 3 + 2 = 5. The amount lent at 25% interest is (2/5) of the total amount, which is (2/5) * 25000 = 10000. The final answer is 10,000. The video ends with a "THANKS FOR WATCHING" screen.

The video provides a clear, structured lesson on applying the alligation method to solve investment interest problems. It begins with a problem statement, then systematically demonstrates the method by calculating the ratio of the amounts based on the interest rates, and finally uses this ratio to find the specific amount lent at the higher interest rate. The progression from problem setup to solution is logical and well-explained, making it a useful resource for students preparing for competitive exams.

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