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
551
A can do a piece of work in 12 days and B in 23 days. In how many days can they complete it together?
Answer:
7.89
Step-by-step solution: 1. A's work rate = 1/12. 2. B's work rate = 1/23. 3. Combined rate = 1/12 + 1/23. 4. Time = 1 / combined rate = 7.89 days.
552
A can do a piece of work in 15 days and B in 21 days. In how many days can they complete it together?
Answer:
8.75
Step-by-step solution: 1. A's work rate = 1/15. 2. B's work rate = 1/21. 3. Combined rate = 1/15 + 1/21. 4. Time = 1 / combined rate = 8.75 days.
553
A can do a piece of work in 16 days and B in 18 days. In how many days can they complete it together?
Answer:
8.47
Step-by-step solution: 1. A's work rate = 1/16. 2. B's work rate = 1/18. 3. Combined rate = 1/16 + 1/18. 4. Time = 1 / combined rate = 8.47 days.
554
A can do a piece of work in 15 days and B in 23 days. In how many days can they complete it together?
Answer:
9.08
Step-by-step solution: 1. A's work rate = 1/15. 2. B's work rate = 1/23. 3. Combined rate = 1/15 + 1/23. 4. Time = 1 / combined rate = 9.08 days.
555
A can do a piece of work in 16 days and B in 21 days. In how many days can they complete it together?
Answer:
9.08
Step-by-step solution: 1. A's work rate = 1/16. 2. B's work rate = 1/21. 3. Combined rate = 1/16 + 1/21. 4. Time = 1 / combined rate = 9.08 days.
556
A can do a piece of work in 12 days and B in 18 days. In how many days can they complete it together?
Answer:
7.2
Step-by-step solution: 1. A's work rate = 1/12. 2. B's work rate = 1/18. 3. Combined rate = 1/12 + 1/18. 4. Time = 1 / combined rate = 7.2 days.
557
A can do a piece of work in 17 days and B in 22 days. In how many days can they complete it together?
Answer:
9.59
Step-by-step solution: 1. A's work rate = 1/17. 2. B's work rate = 1/22. 3. Combined rate = 1/17 + 1/22. 4. Time = 1 / combined rate = 9.59 days.
558
A can do a piece of work in 13 days and B in 24 days. In how many days can they complete it together?
Answer:
8.43
Step-by-step solution: 1. A's work rate = 1/13. 2. B's work rate = 1/24. 3. Combined rate = 1/13 + 1/24. 4. Time = 1 / combined rate = 8.43 days.
559
A can do a piece of work in 16 days and B in 24 days. In how many days can they complete it together?
Answer:
9.6
Step-by-step solution: 1. A's work rate = 1/16. 2. B's work rate = 1/24. 3. Combined rate = 1/16 + 1/24. 4. Time = 1 / combined rate = 9.6 days.
560
A can do a piece of work in 17 days and B in 19 days. In how many days can they complete it together?
Answer:
8.97
Step-by-step solution: 1. A's work rate = 1/17. 2. B's work rate = 1/19. 3. Combined rate = 1/17 + 1/19. 4. Time = 1 / combined rate = 8.97 days.