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
31
Food for 18 men lasts 31 days. If 7 more men join, for how many days will the food last?
Answer:
22.32
Step-by-step solution: 1. Food measured in man-days = 18 * 31 = 558. 2. New number of men = 18 + 7 = 25. 3. New days = man-days / new men = 558 / 25 = 22.32.
32
Food for 18 men lasts 32 days. If 10 more men join, for how many days will the food last?
Answer:
20.57
Step-by-step solution: 1. Food measured in man-days = 18 * 32 = 576. 2. New number of men = 18 + 10 = 28. 3. New days = man-days / new men = 576 / 28 = 20.57.
33
Food for 21 men lasts 31 days. If 6 more men join, for how many days will the food last?
Answer:
24.11
Step-by-step solution: 1. Food measured in man-days = 21 * 31 = 651. 2. New number of men = 21 + 6 = 27. 3. New days = man-days / new men = 651 / 27 = 24.11.
34
Food for 21 men lasts 35 days. If 9 more men join, for how many days will the food last?
Answer:
24.5
Step-by-step solution: 1. Food measured in man-days = 21 * 35 = 735. 2. New number of men = 21 + 9 = 30. 3. New days = man-days / new men = 735 / 30 = 24.5.
35
Food for 23 men lasts 34 days. If 6 more men join, for how many days will the food last?
Answer:
26.97
Step-by-step solution: 1. Food measured in man-days = 23 * 34 = 782. 2. New number of men = 23 + 6 = 29. 3. New days = man-days / new men = 782 / 29 = 26.97.
36
Food for 21 men lasts 31 days. If 10 more men join, for how many days will the food last?
Answer:
21.0
Step-by-step solution: 1. Food measured in man-days = 21 * 31 = 651. 2. New number of men = 21 + 10 = 31. 3. New days = man-days / new men = 651 / 31 = 21.0.
37
Food for 20 men lasts 30 days. If 7 more men join, for how many days will the food last?
Answer:
22.22
Step-by-step solution: 1. Food measured in man-days = 20 * 30 = 600. 2. New number of men = 20 + 7 = 27. 3. New days = man-days / new men = 600 / 27 = 22.22.
38
Food for 19 men lasts 32 days. If 10 more men join, for how many days will the food last?
Answer:
20.97
Step-by-step solution: 1. Food measured in man-days = 19 * 32 = 608. 2. New number of men = 19 + 10 = 29. 3. New days = man-days / new men = 608 / 29 = 20.97.
39
Food for 22 men lasts 34 days. If 10 more men join, for how many days will the food last?
Answer:
23.38
Step-by-step solution: 1. Food measured in man-days = 22 * 34 = 748. 2. New number of men = 22 + 10 = 32. 3. New days = man-days / new men = 748 / 32 = 23.38.
40
Food for 19 men lasts 33 days. If 10 more men join, for how many days will the food last?
Answer:
21.62
Step-by-step solution: 1. Food measured in man-days = 19 * 33 = 627. 2. New number of men = 19 + 10 = 29. 3. New days = man-days / new men = 627 / 29 = 21.62.