## Ismaiel Kalady is teaching live on Unacademy Plus

TIME & WORK LCM - Efficiency Shortcut Tricks 5 20 QUESTIONS unacademy

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

13. A man is twice as fast as women and a women is twice fast as a boy in doing a work. If all of them together can finish the work in 7 days, a boy will do it alone in:

13. A man is twice as fast as women and a women is twice fast as a boy in doing a work. If all of them together can finish the work in 7 days, a boy will do it alone in: Let Efficiency of Boy >1,t hen Women 2, Men 4

13. A man is twice as fast as women and a women is twice fast as a boy in doing a work. If all of them together can finish the work in 7 days, a boy will do it alone in: Let Efficiency of Boy >1,t hen Women 2, Men 4 Total Efficiency of (B+W+M) 1+2+4 7 Total Work 7 x 7 49

13. A man is twice as fast as women and a women is twice fast as a boy in doing a work. If all of them together can finish the work in 7 days, a boy will do it alone in: Let Efficiency of Boy 1, then women 2, Men 4 Total Efficiency of (B+W+M) = 1+2+4 = 7 Total Work 7 x 7 49 49 Days needed by Boy 49 days

14. A, B and C can do a work in 5, 10 and 15 days respectively. They started to do work together but A & B left after two days. C did the remaining work in hovw many days?

14. A, B and C can do a work in 5, 10 and 15 days respectively. They started to do work together but A & B left after two days. C did the remaining work in how many days? B10330 (LCM) C 15

14. A, B and C can do a work in 5, 10 and 15 days respectively. They started to do work together but A & B left after two days. C did the remaining work in how many days? B 1030 (LCM) C 15 Total Efficiency A+B+C 6+3+2 11 Work done by (A+B+C) in 2 days-2 11 22

14. A, B and C can do a work in 5, 10 and 15 days respectively. They started to do work together but A & B left after two days. C did the remaining work in how many days? B 10 330 (LCM) C 15 Total Efficiency A+B+C 6+3+2 11 Work done by (A+B+C) in 2 days 2 x 11 - 22 Remaining Work 30 22 8 Days needed by C to finish remaining Work-4 days

15. A can do a piece of work in 25 days and B can do the same work in 30 days. They work together for 5 days and then A leaves. B will finish the remaining work in A 25 6 150 ( LCM) B30 5

15. A can do a piece of work in 25 days and B can do the same work in 30 days. They work together for 5 days and then A leaves. B will finish the remaining work in A 25 6 B 30 Work done together for 5 days 11 5 55 Remaining Work 150 55 95 150 (LCM) 95 Days needed by B-19 days