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
51
Food for 21 men lasts 32 days. If 8 more men join, for how many days will the food last?
Answer:
23.17
Step-by-step solution: 1. Food measured in man-days = 21 * 32 = 672. 2. New number of men = 21 + 8 = 29. 3. New days = man-days / new men = 672 / 29 = 23.17.
52
Food for 18 men lasts 33 days. If 7 more men join, for how many days will the food last?
Answer:
23.76
Step-by-step solution: 1. Food measured in man-days = 18 * 33 = 594. 2. New number of men = 18 + 7 = 25. 3. New days = man-days / new men = 594 / 25 = 23.76.
53
Food for 18 men lasts 34 days. If 6 more men join, for how many days will the food last?
Answer:
25.5
Step-by-step solution: 1. Food measured in man-days = 18 * 34 = 612. 2. New number of men = 18 + 6 = 24. 3. New days = man-days / new men = 612 / 24 = 25.5.
54
Food for 22 men lasts 35 days. If 10 more men join, for how many days will the food last?
Answer:
24.06
Step-by-step solution: 1. Food measured in man-days = 22 * 35 = 770. 2. New number of men = 22 + 10 = 32. 3. New days = man-days / new men = 770 / 32 = 24.06.
55
Food for 18 men lasts 32 days. If 7 more men join, for how many days will the food last?
Answer:
23.04
Step-by-step solution: 1. Food measured in man-days = 18 * 32 = 576. 2. New number of men = 18 + 7 = 25. 3. New days = man-days / new men = 576 / 25 = 23.04.
56
Food for 20 men lasts 31 days. If 7 more men join, for how many days will the food last?
Answer:
22.96
Step-by-step solution: 1. Food measured in man-days = 20 * 31 = 620. 2. New number of men = 20 + 7 = 27. 3. New days = man-days / new men = 620 / 27 = 22.96.
57
Food for 23 men lasts 32 days. If 7 more men join, for how many days will the food last?
Answer:
24.53
Step-by-step solution: 1. Food measured in man-days = 23 * 32 = 736. 2. New number of men = 23 + 7 = 30. 3. New days = man-days / new men = 736 / 30 = 24.53.
58
Food for 24 men lasts 30 days. If 7 more men join, for how many days will the food last?
Answer:
23.23
Step-by-step solution: 1. Food measured in man-days = 24 * 30 = 720. 2. New number of men = 24 + 7 = 31. 3. New days = man-days / new men = 720 / 31 = 23.23.
59
Food for 23 men lasts 33 days. If 9 more men join, for how many days will the food last?
Answer:
23.72
Step-by-step solution: 1. Food measured in man-days = 23 * 33 = 759. 2. New number of men = 23 + 9 = 32. 3. New days = man-days / new men = 759 / 32 = 23.72.
60
Food for 22 men lasts 32 days. If 6 more men join, for how many days will the food last?
Answer:
25.14
Step-by-step solution: 1. Food measured in man-days = 22 * 32 = 704. 2. New number of men = 22 + 6 = 28. 3. New days = man-days / new men = 704 / 28 = 25.14.