Mathematics/General Ability MCQs
Topic Notes: Mathematics/General Ability
MCQs and preparation resources for competitive exams, covering important concepts, past papers, and detailed explanations.
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
31
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.
32
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.
33
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.
34
A can do a piece of work in 14 days and B in 24 days. In how many days can they complete it together?
Answer:
8.84
Step-by-step solution: 1. A's work rate = 1/14. 2. B's work rate = 1/24. 3. Combined rate = 1/14 + 1/24. 4. Time = 1 / combined rate = 8.84 days.
35
A can do a piece of work in 15 days and B in 19 days. In how many days can they complete it together?
Answer:
8.38
Step-by-step solution: 1. A's work rate = 1/15. 2. B's work rate = 1/19. 3. Combined rate = 1/15 + 1/19. 4. Time = 1 / combined rate = 8.38 days.
36
A can do a piece of work in 17 days and B in 18 days. In how many days can they complete it together?
Answer:
8.74
Step-by-step solution: 1. A's work rate = 1/17. 2. B's work rate = 1/18. 3. Combined rate = 1/17 + 1/18. 4. Time = 1 / combined rate = 8.74 days.
37
A can do a piece of work in 18 days and B in 19 days. In how many days can they complete it together?
Answer:
9.24
Step-by-step solution: 1. A's work rate = 1/18. 2. B's work rate = 1/19. 3. Combined rate = 1/18 + 1/19. 4. Time = 1 / combined rate = 9.24 days.
38
A can do a piece of work in 12 days and B in 22 days. In how many days can they complete it together?
Answer:
7.76
Step-by-step solution: 1. A's work rate = 1/12. 2. B's work rate = 1/22. 3. Combined rate = 1/12 + 1/22. 4. Time = 1 / combined rate = 7.76 days.
39
A can do a piece of work in 13 days and B in 20 days. In how many days can they complete it together?
Answer:
7.88
Step-by-step solution: 1. A's work rate = 1/13. 2. B's work rate = 1/20. 3. Combined rate = 1/13 + 1/20. 4. Time = 1 / combined rate = 7.88 days.
40
A can do a piece of work in 13 days and B in 22 days. In how many days can they complete it together?
Answer:
8.17
Step-by-step solution: 1. A's work rate = 1/13. 2. B's work rate = 1/22. 3. Combined rate = 1/13 + 1/22. 4. Time = 1 / combined rate = 8.17 days.