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
71
Food for 21 men lasts 30 days. If 8 more men join, for how many days will the food last?
Answer:
21.72
Step-by-step solution: 1. Food measured in man-days = 21 * 30 = 630. 2. New number of men = 21 + 8 = 29. 3. New days = man-days / new men = 630 / 29 = 21.72.
72
Food for 24 men lasts 31 days. If 9 more men join, for how many days will the food last?
Answer:
22.55
Step-by-step solution: 1. Food measured in man-days = 24 * 31 = 744. 2. New number of men = 24 + 9 = 33. 3. New days = man-days / new men = 744 / 33 = 22.55.
73
Food for 19 men lasts 32 days. If 8 more men join, for how many days will the food last?
Answer:
22.52
Step-by-step solution: 1. Food measured in man-days = 19 * 32 = 608. 2. New number of men = 19 + 8 = 27. 3. New days = man-days / new men = 608 / 27 = 22.52.
74
Food for 23 men lasts 33 days. If 7 more men join, for how many days will the food last?
Answer:
25.3
Step-by-step solution: 1. Food measured in man-days = 23 * 33 = 759. 2. New number of men = 23 + 7 = 30. 3. New days = man-days / new men = 759 / 30 = 25.3.
75
Food for 20 men lasts 31 days. If 10 more men join, for how many days will the food last?
Answer:
20.67
Step-by-step solution: 1. Food measured in man-days = 20 * 31 = 620. 2. New number of men = 20 + 10 = 30. 3. New days = man-days / new men = 620 / 30 = 20.67.
76
Food for 22 men lasts 30 days. If 7 more men join, for how many days will the food last?
Answer:
22.76
Step-by-step solution: 1. Food measured in man-days = 22 * 30 = 660. 2. New number of men = 22 + 7 = 29. 3. New days = man-days / new men = 660 / 29 = 22.76.
77
Food for 24 men lasts 30 days. If 9 more men join, for how many days will the food last?
Answer:
21.82
Step-by-step solution: 1. Food measured in man-days = 24 * 30 = 720. 2. New number of men = 24 + 9 = 33. 3. New days = man-days / new men = 720 / 33 = 21.82.
78
Food for 23 men lasts 30 days. If 10 more men join, for how many days will the food last?
Answer:
20.91
Step-by-step solution: 1. Food measured in man-days = 23 * 30 = 690. 2. New number of men = 23 + 10 = 33. 3. New days = man-days / new men = 690 / 33 = 20.91.
79
Food for 19 men lasts 30 days. If 6 more men join, for how many days will the food last?
Answer:
22.8
Step-by-step solution: 1. Food measured in man-days = 19 * 30 = 570. 2. New number of men = 19 + 6 = 25. 3. New days = man-days / new men = 570 / 25 = 22.8.
80
Food for 19 men lasts 35 days. If 9 more men join, for how many days will the food last?
Answer:
23.75
Step-by-step solution: 1. Food measured in man-days = 19 * 35 = 665. 2. New number of men = 19 + 9 = 28. 3. New days = man-days / new men = 665 / 28 = 23.75.