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 Ability: Speed Mathematics and Basic Mathematics, Percentage, Ratio and Proportion (Ratios), Average, Profit and Loss, Simple Interest and Compound Interest, Time and Work, Pipe and Cistern, Speed Time and Distance, Number System, HCF LCM, Data Interpretation, Age Problems, Mixture and Alligation, Partnership, Algebra, Sequence and Series (Series), Mensuration and Geometry, Arithmetic
  2. Reasoning Ability: Puzzle Solving (Puzzles), Seating Arrangements, Coding Decoding, Blood Relations, Directions (Direction Test), Syllogisms, Data Sufficiency, Ranking, Order and Sequence, Series (Number and Letter Series) (Numerical Relations and Reasoning), Logical Sequence Of Words, Calendar, Clock, Cubes & Dices, Analytical Reasoning (Counting Figures Reasoning), Data Arrangement, Non Verbal Reasoning (Spatial Aptitude) (Spatial Reasoning) (Visual Reasoning), Deductive and Inductive Reasoning (Logical Deduction and Induction) (Prepositional Reasoning)
  3. Verbal Ability: Comprehension / Reading Comprehension / Unseen Passages (Critical Reasoning) (Paragraph Questions), Cloze Test (Cloze Passage), Sentence Re-arrangements (Para Jumbles) (Narrative Sequencing), Vocabulary, Sentence Completion (Fill in the blanks), Active Passive Voice (Voice), Direct and Indirect Speech, Subject Verb Agreement (Verb Noun Agreement), Tenses, Preposition, Articles, Sentence Correction (Error Correction)
  4. Programming Basics (MCQs + Interview): C Programming by Yash Sir, Programming in C++, Java, Python for Placements by Yash Sir
  5. OOPs (MCQs + Interview): Object Oriented Programming (OOPS)
  6. DBMS (MCQs + Interview): Basics of DBMS, ER Diagram, Relational Model & Functional Dependencies, Keys & Integrity Constraints, Normalization (1NF - BCNF), Transaction Management, Decomposition Properties & 4NF, Concurrency Control, Database Recovery, File Organization & Indexing, Relational Algebra, Database Security & Authorization
  7. SQL (MCQs + Interview): SQL
  8. Operating Systems (MCQs + Interview): Introduction to OS, Process Management, CPU Scheduling, Deadlock, Threads & Process Creation, Memory Management, Virtual Memory, Process Synchronization, Disc Scheduling, File Management, Security
  9. Computer Networks (MCQs + Interview): 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, Mobile Technology, Cloud Computing and IoT, Cyber and Info Security
  10. Coding: Coding Questions by Yash Sir
  11. HR Interview: MR & HR Interview Preparation
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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