All Categories MCQs
Topic Notes: All Categories
General Description
Plato
- Biography: Ancient Greek philosopher (427–347 BCE), student of Socrates and teacher of Aristotle, founder of the Academy in Athens.
- Important Ideas:
- Theory of Forms
- Philosopher-King
- Ideal State
561
A can do a piece of work in 12 days and B in 24 days. In how many days can they complete it together?
Answer:
8.0
Step-by-step solution: 1. A's work rate = 1/12. 2. B's work rate = 1/24. 3. Combined rate = 1/12 + 1/24. 4. Time = 1 / combined rate = 8.0 days.
562
A can do a piece of work in 17 days and B in 23 days. In how many days can they complete it together?
Answer:
9.78
Step-by-step solution: 1. A's work rate = 1/17. 2. B's work rate = 1/23. 3. Combined rate = 1/17 + 1/23. 4. Time = 1 / combined rate = 9.78 days.
563
A can do a piece of work in 12 days and B in 19 days. In how many days can they complete it together?
Answer:
7.35
Step-by-step solution: 1. A's work rate = 1/12. 2. B's work rate = 1/19. 3. Combined rate = 1/12 + 1/19. 4. Time = 1 / combined rate = 7.35 days.
564
A can do a piece of work in 12 days and B in 25 days. In how many days can they complete it together?
Answer:
8.11
Step-by-step solution: 1. A's work rate = 1/12. 2. B's work rate = 1/25. 3. Combined rate = 1/12 + 1/25. 4. Time = 1 / combined rate = 8.11 days.
565
A can do a piece of work in 14 days and B in 18 days. In how many days can they complete it together?
Answer:
7.88
Step-by-step solution: 1. A's work rate = 1/14. 2. B's work rate = 1/18. 3. Combined rate = 1/14 + 1/18. 4. Time = 1 / combined rate = 7.88 days.
566
A can do a piece of work in 15 days and B in 20 days. In how many days can they complete it together?
Answer:
8.57
Step-by-step solution: 1. A's work rate = 1/15. 2. B's work rate = 1/20. 3. Combined rate = 1/15 + 1/20. 4. Time = 1 / combined rate = 8.57 days.
567
A can do a piece of work in 12 days and B in 20 days. In how many days can they complete it together?
Answer:
7.5
Step-by-step solution: 1. A's work rate = 1/12. 2. B's work rate = 1/20. 3. Combined rate = 1/12 + 1/20. 4. Time = 1 / combined rate = 7.5 days.
568
A can do a piece of work in 14 days and B in 23 days. In how many days can they complete it together?
Answer:
8.7
Step-by-step solution: 1. A's work rate = 1/14. 2. B's work rate = 1/23. 3. Combined rate = 1/14 + 1/23. 4. Time = 1 / combined rate = 8.7 days.
569
A can do a piece of work in 16 days and B in 22 days. In how many days can they complete it together?
Answer:
9.26
Step-by-step solution: 1. A's work rate = 1/16. 2. B's work rate = 1/22. 3. Combined rate = 1/16 + 1/22. 4. Time = 1 / combined rate = 9.26 days.
570
A can do a piece of work in 13 days and B in 18 days. In how many days can they complete it together?
Answer:
7.55
Step-by-step solution: 1. A's work rate = 1/13. 2. B's work rate = 1/18. 3. Combined rate = 1/13 + 1/18. 4. Time = 1 / combined rate = 7.55 days.