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
81
Food for 22 men lasts 32 days. If 9 more men join, for how many days will the food last?
Answer:
22.71
Step-by-step solution: 1. Food measured in man-days = 22 * 32 = 704. 2. New number of men = 22 + 9 = 31. 3. New days = man-days / new men = 704 / 31 = 22.71.
82
Food for 21 men lasts 30 days. If 9 more men join, for how many days will the food last?
Answer:
21.0
Step-by-step solution: 1. Food measured in man-days = 21 * 30 = 630. 2. New number of men = 21 + 9 = 30. 3. New days = man-days / new men = 630 / 30 = 21.0.
83
Food for 20 men lasts 30 days. If 10 more men join, for how many days will the food last?
Answer:
20.0
Step-by-step solution: 1. Food measured in man-days = 20 * 30 = 600. 2. New number of men = 20 + 10 = 30. 3. New days = man-days / new men = 600 / 30 = 20.0.
84
Food for 22 men lasts 31 days. If 6 more men join, for how many days will the food last?
Answer:
24.36
Step-by-step solution: 1. Food measured in man-days = 22 * 31 = 682. 2. New number of men = 22 + 6 = 28. 3. New days = man-days / new men = 682 / 28 = 24.36.
85
Food for 24 men lasts 30 days. If 6 more men join, for how many days will the food last?
Answer:
24.0
Step-by-step solution: 1. Food measured in man-days = 24 * 30 = 720. 2. New number of men = 24 + 6 = 30. 3. New days = man-days / new men = 720 / 30 = 24.0.
86
Food for 19 men lasts 30 days. If 9 more men join, for how many days will the food last?
Answer:
20.36
Step-by-step solution: 1. Food measured in man-days = 19 * 30 = 570. 2. New number of men = 19 + 9 = 28. 3. New days = man-days / new men = 570 / 28 = 20.36.
87
Food for 23 men lasts 34 days. If 9 more men join, for how many days will the food last?
Answer:
24.44
Step-by-step solution: 1. Food measured in man-days = 23 * 34 = 782. 2. New number of men = 23 + 9 = 32. 3. New days = man-days / new men = 782 / 32 = 24.44.
88
Food for 19 men lasts 35 days. If 7 more men join, for how many days will the food last?
Answer:
25.58
Step-by-step solution: 1. Food measured in man-days = 19 * 35 = 665. 2. New number of men = 19 + 7 = 26. 3. New days = man-days / new men = 665 / 26 = 25.58.
89
Food for 20 men lasts 30 days. If 8 more men join, for how many days will the food last?
Answer:
21.43
Step-by-step solution: 1. Food measured in man-days = 20 * 30 = 600. 2. New number of men = 20 + 8 = 28. 3. New days = man-days / new men = 600 / 28 = 21.43.
90
Food for 18 men lasts 32 days. If 9 more men join, for how many days will the food last?
Answer:
21.33
Step-by-step solution: 1. Food measured in man-days = 18 * 32 = 576. 2. New number of men = 18 + 9 = 27. 3. New days = man-days / new men = 576 / 27 = 21.33.