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
61
Food for 24 men lasts 32 days. If 6 more men join, for how many days will the food last?
Answer:
25.6
Step-by-step solution: 1. Food measured in man-days = 24 * 32 = 768. 2. New number of men = 24 + 6 = 30. 3. New days = man-days / new men = 768 / 30 = 25.6.
62
Food for 20 men lasts 31 days. If 9 more men join, for how many days will the food last?
Answer:
21.38
Step-by-step solution: 1. Food measured in man-days = 20 * 31 = 620. 2. New number of men = 20 + 9 = 29. 3. New days = man-days / new men = 620 / 29 = 21.38.
63
Food for 21 men lasts 34 days. If 9 more men join, for how many days will the food last?
Answer:
23.8
Step-by-step solution: 1. Food measured in man-days = 21 * 34 = 714. 2. New number of men = 21 + 9 = 30. 3. New days = man-days / new men = 714 / 30 = 23.8.
64
Food for 18 men lasts 30 days. If 6 more men join, for how many days will the food last?
Answer:
22.5
Step-by-step solution: 1. Food measured in man-days = 18 * 30 = 540. 2. New number of men = 18 + 6 = 24. 3. New days = man-days / new men = 540 / 24 = 22.5.
65
Food for 22 men lasts 33 days. If 6 more men join, for how many days will the food last?
Answer:
25.93
Step-by-step solution: 1. Food measured in man-days = 22 * 33 = 726. 2. New number of men = 22 + 6 = 28. 3. New days = man-days / new men = 726 / 28 = 25.93.
66
Food for 23 men lasts 35 days. If 6 more men join, for how many days will the food last?
Answer:
27.76
Step-by-step solution: 1. Food measured in man-days = 23 * 35 = 805. 2. New number of men = 23 + 6 = 29. 3. New days = man-days / new men = 805 / 29 = 27.76.
67
Food for 20 men lasts 33 days. If 9 more men join, for how many days will the food last?
Answer:
22.76
Step-by-step solution: 1. Food measured in man-days = 20 * 33 = 660. 2. New number of men = 20 + 9 = 29. 3. New days = man-days / new men = 660 / 29 = 22.76.
68
Food for 18 men lasts 35 days. If 6 more men join, for how many days will the food last?
Answer:
26.25
Step-by-step solution: 1. Food measured in man-days = 18 * 35 = 630. 2. New number of men = 18 + 6 = 24. 3. New days = man-days / new men = 630 / 24 = 26.25.
69
Food for 22 men lasts 31 days. If 9 more men join, for how many days will the food last?
Answer:
22.0
Step-by-step solution: 1. Food measured in man-days = 22 * 31 = 682. 2. New number of men = 22 + 9 = 31. 3. New days = man-days / new men = 682 / 31 = 22.0.
70
Food for 24 men lasts 34 days. If 7 more men join, for how many days will the food last?
Answer:
26.32
Step-by-step solution: 1. Food measured in man-days = 24 * 34 = 816. 2. New number of men = 24 + 7 = 31. 3. New days = man-days / new men = 816 / 31 = 26.32.