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
11 men can complete a job in 47 days working 7 hours per day. How many days will 16 men take if they work 5 hours per day?
Answer:
45.24
Step-by-step solution: 1. Total work is proportional to men * days * hours. 2. Initial work units = 11 * 47 * 7 = 3619. 3. New daily work = 16 * 5. 4. New days = 3619 / (16 * 5) = 45.24.
2
11 men can complete a job in 23 days working 7 hours per day. How many days will 16 men take if they work 5 hours per day?
Answer:
22.14
Step-by-step solution: 1. Total work is proportional to men * days * hours. 2. Initial work units = 11 * 23 * 7 = 1771. 3. New daily work = 16 * 5. 4. New days = 1771 / (16 * 5) = 22.14.
3
15 men can complete a job in 29 days working 9 hours per day. How many days will 20 men take if they work 7 hours per day?
Answer:
27.96
Step-by-step solution: 1. Total work is proportional to men * days * hours. 2. Initial work units = 15 * 29 * 9 = 3915. 3. New daily work = 20 * 7. 4. New days = 3915 / (20 * 7) = 27.96.
4
13 men can complete a job in 21 days working 7 hours per day. How many days will 18 men take if they work 5 hours per day?
Answer:
21.23
Step-by-step solution: 1. Total work is proportional to men * days * hours. 2. Initial work units = 13 * 21 * 7 = 1911. 3. New daily work = 18 * 5. 4. New days = 1911 / (18 * 5) = 21.23.
5
13 men can complete a job in 15 days working 9 hours per day. How many days will 18 men take if they work 7 hours per day?
Answer:
13.93
Step-by-step solution: 1. Total work is proportional to men * days * hours. 2. Initial work units = 13 * 15 * 9 = 1755. 3. New daily work = 18 * 7. 4. New days = 1755 / (18 * 7) = 13.93.
6
11 men can complete a job in 41 days working 9 hours per day. How many days will 16 men take if they work 7 hours per day?
Answer:
36.24
Step-by-step solution: 1. Total work is proportional to men * days * hours. 2. Initial work units = 11 * 41 * 9 = 4059. 3. New daily work = 16 * 7. 4. New days = 4059 / (16 * 7) = 36.24.
7
10 men can complete a job in 23 days working 6 hours per day. How many days will 15 men take if they work 4 hours per day?
Answer:
23.0
Step-by-step solution: 1. Total work is proportional to men * days * hours. 2. Initial work units = 10 * 23 * 6 = 1380. 3. New daily work = 15 * 4. 4. New days = 1380 / (15 * 4) = 23.0.
8
10 men can complete a job in 41 days working 8 hours per day. How many days will 15 men take if they work 6 hours per day?
Answer:
36.44
Step-by-step solution: 1. Total work is proportional to men * days * hours. 2. Initial work units = 10 * 41 * 8 = 3280. 3. New daily work = 15 * 6. 4. New days = 3280 / (15 * 6) = 36.44.
9
14 men can complete a job in 35 days working 6 hours per day. How many days will 19 men take if they work 4 hours per day?
Answer:
38.68
Step-by-step solution: 1. Total work is proportional to men * days * hours. 2. Initial work units = 14 * 35 * 6 = 2940. 3. New daily work = 19 * 4. 4. New days = 2940 / (19 * 4) = 38.68.
10
14 men can complete a job in 41 days working 8 hours per day. How many days will 19 men take if they work 6 hours per day?
Answer:
40.28
Step-by-step solution: 1. Total work is proportional to men * days * hours. 2. Initial work units = 14 * 41 * 8 = 4592. 3. New daily work = 19 * 6. 4. New days = 4592 / (19 * 6) = 40.28.