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
1
Food for 19 men lasts 30 days. If 7 more men join, for how many days will the food last?
Answer:
21.92
Step-by-step solution: 1. Food measured in man-days = 19 * 30 = 570. 2. New number of men = 19 + 7 = 26. 3. New days = man-days / new men = 570 / 26 = 21.92.
2
Food for 21 men lasts 35 days. If 6 more men join, for how many days will the food last?
Answer:
27.22
Step-by-step solution: 1. Food measured in man-days = 21 * 35 = 735. 2. New number of men = 21 + 6 = 27. 3. New days = man-days / new men = 735 / 27 = 27.22.
3
Food for 20 men lasts 35 days. If 8 more men join, for how many days will the food last?
Answer:
25.0
Step-by-step solution: 1. Food measured in man-days = 20 * 35 = 700. 2. New number of men = 20 + 8 = 28. 3. New days = man-days / new men = 700 / 28 = 25.0.
4
Food for 20 men lasts 35 days. If 10 more men join, for how many days will the food last?
Answer:
23.33
Step-by-step solution: 1. Food measured in man-days = 20 * 35 = 700. 2. New number of men = 20 + 10 = 30. 3. New days = man-days / new men = 700 / 30 = 23.33.
5
Food for 23 men lasts 35 days. If 8 more men join, for how many days will the food last?
Answer:
25.97
Step-by-step solution: 1. Food measured in man-days = 23 * 35 = 805. 2. New number of men = 23 + 8 = 31. 3. New days = man-days / new men = 805 / 31 = 25.97.
6
Food for 24 men lasts 35 days. If 9 more men join, for how many days will the food last?
Answer:
25.45
Step-by-step solution: 1. Food measured in man-days = 24 * 35 = 840. 2. New number of men = 24 + 9 = 33. 3. New days = man-days / new men = 840 / 33 = 25.45.
7
Food for 21 men lasts 30 days. If 6 more men join, for how many days will the food last?
Answer:
23.33
Step-by-step solution: 1. Food measured in man-days = 21 * 30 = 630. 2. New number of men = 21 + 6 = 27. 3. New days = man-days / new men = 630 / 27 = 23.33.
8
Food for 20 men lasts 32 days. If 7 more men join, for how many days will the food last?
Answer:
23.7
Step-by-step solution: 1. Food measured in man-days = 20 * 32 = 640. 2. New number of men = 20 + 7 = 27. 3. New days = man-days / new men = 640 / 27 = 23.7.
9
Food for 19 men lasts 32 days. If 6 more men join, for how many days will the food last?
Answer:
24.32
Step-by-step solution: 1. Food measured in man-days = 19 * 32 = 608. 2. New number of men = 19 + 6 = 25. 3. New days = man-days / new men = 608 / 25 = 24.32.
10
Food for 22 men lasts 30 days. If 10 more men join, for how many days will the food last?
Answer:
20.62
Step-by-step solution: 1. Food measured in man-days = 22 * 30 = 660. 2. New number of men = 22 + 10 = 32. 3. New days = man-days / new men = 660 / 32 = 20.62.