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
41
Food for 22 men lasts 30 days. If 9 more men join, for how many days will the food last?
Answer:
21.29
Step-by-step solution: 1. Food measured in man-days = 22 * 30 = 660. 2. New number of men = 22 + 9 = 31. 3. New days = man-days / new men = 660 / 31 = 21.29.
42
Food for 23 men lasts 31 days. If 8 more men join, for how many days will the food last?
Answer:
23.0
Step-by-step solution: 1. Food measured in man-days = 23 * 31 = 713. 2. New number of men = 23 + 8 = 31. 3. New days = man-days / new men = 713 / 31 = 23.0.
43
Food for 24 men lasts 31 days. If 8 more men join, for how many days will the food last?
Answer:
23.25
Step-by-step solution: 1. Food measured in man-days = 24 * 31 = 744. 2. New number of men = 24 + 8 = 32. 3. New days = man-days / new men = 744 / 32 = 23.25.
44
Food for 22 men lasts 31 days. If 7 more men join, for how many days will the food last?
Answer:
23.52
Step-by-step solution: 1. Food measured in man-days = 22 * 31 = 682. 2. New number of men = 22 + 7 = 29. 3. New days = man-days / new men = 682 / 29 = 23.52.
45
Food for 21 men lasts 31 days. If 8 more men join, for how many days will the food last?
Answer:
22.45
Step-by-step solution: 1. Food measured in man-days = 21 * 31 = 651. 2. New number of men = 21 + 8 = 29. 3. New days = man-days / new men = 651 / 29 = 22.45.
46
Food for 23 men lasts 30 days. If 8 more men join, for how many days will the food last?
Answer:
22.26
Step-by-step solution: 1. Food measured in man-days = 23 * 30 = 690. 2. New number of men = 23 + 8 = 31. 3. New days = man-days / new men = 690 / 31 = 22.26.
47
Food for 20 men lasts 34 days. If 6 more men join, for how many days will the food last?
Answer:
26.15
Step-by-step solution: 1. Food measured in man-days = 20 * 34 = 680. 2. New number of men = 20 + 6 = 26. 3. New days = man-days / new men = 680 / 26 = 26.15.
48
Food for 18 men lasts 31 days. If 10 more men join, for how many days will the food last?
Answer:
19.93
Step-by-step solution: 1. Food measured in man-days = 18 * 31 = 558. 2. New number of men = 18 + 10 = 28. 3. New days = man-days / new men = 558 / 28 = 19.93.
49
Food for 20 men lasts 32 days. If 9 more men join, for how many days will the food last?
Answer:
22.07
Step-by-step solution: 1. Food measured in man-days = 20 * 32 = 640. 2. New number of men = 20 + 9 = 29. 3. New days = man-days / new men = 640 / 29 = 22.07.
50
Food for 22 men lasts 33 days. If 8 more men join, for how many days will the food last?
Answer:
24.2
Step-by-step solution: 1. Food measured in man-days = 22 * 33 = 726. 2. New number of men = 22 + 8 = 30. 3. New days = man-days / new men = 726 / 30 = 24.2.