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
11
Food for 18 men lasts 31 days. If 8 more men join, for how many days will the food last?
Answer:
21.46
Step-by-step solution: 1. Food measured in man-days = 18 * 31 = 558. 2. New number of men = 18 + 8 = 26. 3. New days = man-days / new men = 558 / 26 = 21.46.
12
Food for 19 men lasts 34 days. If 10 more men join, for how many days will the food last?
Answer:
22.28
Step-by-step solution: 1. Food measured in man-days = 19 * 34 = 646. 2. New number of men = 19 + 10 = 29. 3. New days = man-days / new men = 646 / 29 = 22.28.
13
Food for 21 men lasts 32 days. If 10 more men join, for how many days will the food last?
Answer:
21.68
Step-by-step solution: 1. Food measured in man-days = 21 * 32 = 672. 2. New number of men = 21 + 10 = 31. 3. New days = man-days / new men = 672 / 31 = 21.68.
14
Food for 19 men lasts 34 days. If 7 more men join, for how many days will the food last?
Answer:
24.85
Step-by-step solution: 1. Food measured in man-days = 19 * 34 = 646. 2. New number of men = 19 + 7 = 26. 3. New days = man-days / new men = 646 / 26 = 24.85.
15
Food for 18 men lasts 35 days. If 8 more men join, for how many days will the food last?
Answer:
24.23
Step-by-step solution: 1. Food measured in man-days = 18 * 35 = 630. 2. New number of men = 18 + 8 = 26. 3. New days = man-days / new men = 630 / 26 = 24.23.
16
Food for 23 men lasts 31 days. If 7 more men join, for how many days will the food last?
Answer:
23.77
Step-by-step solution: 1. Food measured in man-days = 23 * 31 = 713. 2. New number of men = 23 + 7 = 30. 3. New days = man-days / new men = 713 / 30 = 23.77.
17
Food for 23 men lasts 31 days. If 10 more men join, for how many days will the food last?
Answer:
21.61
Step-by-step solution: 1. Food measured in man-days = 23 * 31 = 713. 2. New number of men = 23 + 10 = 33. 3. New days = man-days / new men = 713 / 33 = 21.61.
18
Food for 24 men lasts 32 days. If 8 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 * 32 = 768. 2. New number of men = 24 + 8 = 32. 3. New days = man-days / new men = 768 / 32 = 24.0.
19
Food for 21 men lasts 34 days. If 7 more men join, for how many days will the food last?
Answer:
25.5
Step-by-step solution: 1. Food measured in man-days = 21 * 34 = 714. 2. New number of men = 21 + 7 = 28. 3. New days = man-days / new men = 714 / 28 = 25.5.
20
Food for 24 men lasts 35 days. If 7 more men join, for how many days will the food last?
Answer:
27.1
Step-by-step solution: 1. Food measured in man-days = 24 * 35 = 840. 2. New number of men = 24 + 7 = 31. 3. New days = man-days / new men = 840 / 31 = 27.1.