Sign up now
to enroll in courses, follow best educators, interact with the community and track your progress.
Download
Time & Work - Part 2 (in Malayalam)
12,010 plays

More
Lesson 2 discusses the basic types of time & work problems. 3 questions are discussed and solved in this lesson. Equations for solving the time and work problem is discussed. The concept of efficiency - lcm method is explained in detail. The cardbox concept for efficiency is discussed. Why Lcm method is preferred is also discussed

Ismaiel Kalady is teaching live on Unacademy Plus

Ismaiel Kalady
I teach Maths & Reasoning for Kerala PSC Cracked RRB ALP, Group D, IBPS,SSC Exams Youtube - IMA Math Tricks Telegram - Issu Math Academy

U
Unacademy user
thankuuu so much sir bs aise hi upload krte rahiye .....please provide previous year analysis
Rupanzil Prince
2 years ago
yes.. previous yr question paper analysis is on the way
thank you. nallavannam manasilavunnunde
thank you sir..super class
thank you sir. good class
  1. TIME & WORK LCM - Efficiency Shortcut Tricks 2 20 QUESTIONS unacademy


  2. Course Overview Basics of Time & Work Problems LCM (Efficiency) Method . In-depth Analysis of Efficiency method through Questions Advanced Tricks to Solve Quickly . Different Types of Time & Work Problems .Previous Year PSC Questions


  3. 4. A can do a piece of work in 12 days and B can do the same work in 24 days. How much time will they take if both work together?


  4. 4. A can do a piece of work in 12 days and B can do the same work in 24 days. How much time will they take if both work together? Equation Method AB A+B 12 24 12+24 12 24 36 24 -8 days 3


  5. 4. A can do a piece of work in 12 days and B can do the same work in 24 days. How much time will they take if both work together? A 12 B 24 LCM 24 (Total Work)


  6. 4. A can do a piece of work in 12 days and B can do the same work in 24 days. How much time will they take if both work together? A 12 24 LCM 24 (Total Work) Efficiency of A2 units Efficiency of B241 units


  7. 4. A can do a piece of work in 12 days and B can do the same work in 24 days. How much time will they take if both work together? A 12 B 24 LCM 24 (Total Work) Efficiency of A2 units Efficiency of B241 units Total Efficiency of A+B 2+1 3 units Days needed by (A+B) 24-8 days 3


  8. 5. A can do a piece of work in 10 days and B alone can do it in 15 days. How much time will both take to finish the work?


  9. 5. A can do a piece of work in 10 days and B alone can do it in 15 days. How much time will both take to finish the work? A - 103 30 ( LCM)


  10. 5. A can do a piece of work in 10 days and B alone can do it in 15 days. How much time will both take to finish the work? A - 103 30 ( LCM) Total Efficiency of A + B 3+2 5 units 30 Days needed by (A+B)6 days


  11. 6. A and B together can do a piece of work in 12 days. B alone can finish it in 30 days. In how many days can A alone finish the work? A B - 12 60 ( LCM) B-30


  12. 6. A and B together can do a piece of work in 12 days. B alone can finish it in 30 days. In how many days can A alone finish the work? A B - 12 B-30 Efficiency of A A+B-B 5-2 3 units Days needed by A 20 days 60 ( LCM) 60