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 complete a task in 14 days and B can finish it in 17 days. How long will they take working together?
Answer:
7.68
Step-by-step solution: 1. A's work rate = 1/14. 2. B's work rate = 1/17. 3. Combined rate = 1/14 + 1/17. 4. Time = 1 / (combined rate) = 7.68 days.
32
A can complete a task in 15 days and B can finish it in 16 days. How long will they take working together?
Answer:
7.74
Step-by-step solution: 1. A's work rate = 1/15. 2. B's work rate = 1/16. 3. Combined rate = 1/15 + 1/16. 4. Time = 1 / (combined rate) = 7.74 days.
33
A can complete a task in 16 days and B can finish it in 13 days. How long will they take working together?
Answer:
7.17
Step-by-step solution: 1. A's work rate = 1/16. 2. B's work rate = 1/13. 3. Combined rate = 1/16 + 1/13. 4. Time = 1 / (combined rate) = 7.17 days.
34
A can complete a task in 15 days and B can finish it in 15 days. How long will they take working together?
Answer:
7.5
Step-by-step solution: 1. A's work rate = 1/15. 2. B's work rate = 1/15. 3. Combined rate = 1/15 + 1/15. 4. Time = 1 / (combined rate) = 7.5 days.
35
A can complete a task in 14 days and B can finish it in 18 days. How long will they take working 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.
36
A can complete a task in 13 days and B can finish it in 16 days. How long will they take working together?
Answer:
7.17
Step-by-step solution: 1. A's work rate = 1/13. 2. B's work rate = 1/16. 3. Combined rate = 1/13 + 1/16. 4. Time = 1 / (combined rate) = 7.17 days.
37
A can complete a task in 15 days and B can finish it in 18 days. How long will they take working together?
Answer:
8.18
Step-by-step solution: 1. A's work rate = 1/15. 2. B's work rate = 1/18. 3. Combined rate = 1/15 + 1/18. 4. Time = 1 / (combined rate) = 8.18 days.
38
A can complete a task in 14 days and B can finish it in 13 days. How long will they take working together?
Answer:
6.74
Step-by-step solution: 1. A's work rate = 1/14. 2. B's work rate = 1/13. 3. Combined rate = 1/14 + 1/13. 4. Time = 1 / (combined rate) = 6.74 days.
39
A can complete a task in 10 days and B can finish it in 15 days. How long will they take working together?
Answer:
6.0
Step-by-step solution: 1. A's work rate = 1/10. 2. B's work rate = 1/15. 3. Combined rate = 1/10 + 1/15. 4. Time = 1 / (combined rate) = 6.0 days.
40
A can complete a task in 13 days and B can finish it in 18 days. How long will they take working 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.