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
21
Food for 23 men lasts 32 days. If 10 more men join, for how many days will the food last?
Answer:
22.3
Step-by-step solution: 1. Food measured in man-days = 23 * 32 = 736. 2. New number of men = 23 + 10 = 33. 3. New days = man-days / new men = 736 / 33 = 22.3.
22
Food for 21 men lasts 33 days. If 10 more men join, for how many days will the food last?
Answer:
22.35
Step-by-step solution: 1. Food measured in man-days = 21 * 33 = 693. 2. New number of men = 21 + 10 = 31. 3. New days = man-days / new men = 693 / 31 = 22.35.
23
Food for 19 men lasts 31 days. If 8 more men join, for how many days will the food last?
Answer:
21.81
Step-by-step solution: 1. Food measured in man-days = 19 * 31 = 589. 2. New number of men = 19 + 8 = 27. 3. New days = man-days / new men = 589 / 27 = 21.81.
24
Food for 21 men lasts 33 days. If 7 more men join, for how many days will the food last?
Answer:
24.75
Step-by-step solution: 1. Food measured in man-days = 21 * 33 = 693. 2. New number of men = 21 + 7 = 28. 3. New days = man-days / new men = 693 / 28 = 24.75.
25
Food for 18 men lasts 30 days. If 10 more men join, for how many days will the food last?
Answer:
19.29
Step-by-step solution: 1. Food measured in man-days = 18 * 30 = 540. 2. New number of men = 18 + 10 = 28. 3. New days = man-days / new men = 540 / 28 = 19.29.
26
Food for 24 men lasts 33 days. If 8 more men join, for how many days will the food last?
Answer:
24.75
Step-by-step solution: 1. Food measured in man-days = 24 * 33 = 792. 2. New number of men = 24 + 8 = 32. 3. New days = man-days / new men = 792 / 32 = 24.75.
27
Food for 22 men lasts 35 days. If 7 more men join, for how many days will the food last?
Answer:
26.55
Step-by-step solution: 1. Food measured in man-days = 22 * 35 = 770. 2. New number of men = 22 + 7 = 29. 3. New days = man-days / new men = 770 / 29 = 26.55.
28
Food for 24 men lasts 34 days. If 10 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 * 34 = 816. 2. New number of men = 24 + 10 = 34. 3. New days = man-days / new men = 816 / 34 = 24.0.
29
Food for 19 men lasts 33 days. If 8 more men join, for how many days will the food last?
Answer:
23.22
Step-by-step solution: 1. Food measured in man-days = 19 * 33 = 627. 2. New number of men = 19 + 8 = 27. 3. New days = man-days / new men = 627 / 27 = 23.22.
30
Food for 24 men lasts 33 days. If 10 more men join, for how many days will the food last?
Answer:
23.29
Step-by-step solution: 1. Food measured in man-days = 24 * 33 = 792. 2. New number of men = 24 + 10 = 34. 3. New days = man-days / new men = 792 / 34 = 23.29.