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
61
If 15 : 20 :: 130 : x, find x.
Answer:
173.33
Step-by-step solution: 1. Use the property of proportions: a/b = c/x. 2. Cross-multiply: x = (b * c) / a = (20 * 130) / 15. 3. Compute x = 173.33.
62
If 17 : 18 :: 176 : x, find x.
Answer:
186.35
Step-by-step solution: 1. Use the property of proportions: a/b = c/x. 2. Cross-multiply: x = (b * c) / a = (18 * 176) / 17. 3. Compute x = 186.35.
63
If 15 : 21 :: 284 : x, find x.
Answer:
397.6
Step-by-step solution: 1. Use the property of proportions: a/b = c/x. 2. Cross-multiply: x = (b * c) / a = (21 * 284) / 15. 3. Compute x = 397.6.
64
If 13 : 19 :: 112 : x, find x.
Answer:
163.69
Step-by-step solution: 1. Use the property of proportions: a/b = c/x. 2. Cross-multiply: x = (b * c) / a = (19 * 112) / 13. 3. Compute x = 163.69.
65
If 17 : 22 :: 232 : x, find x.
Answer:
300.24
Step-by-step solution: 1. Use the property of proportions: a/b = c/x. 2. Cross-multiply: x = (b * c) / a = (22 * 232) / 17. 3. Compute x = 300.24.
66
If 13 : 22 :: 294 : x, find x.
Answer:
497.54
Step-by-step solution: 1. Use the property of proportions: a/b = c/x. 2. Cross-multiply: x = (b * c) / a = (22 * 294) / 13. 3. Compute x = 497.54.
67
If 14 : 19 :: 184 : x, find x.
Answer:
249.71
Step-by-step solution: 1. Use the property of proportions: a/b = c/x. 2. Cross-multiply: x = (b * c) / a = (19 * 184) / 14. 3. Compute x = 249.71.
68
If 17 : 21 :: 148 : x, find x.
Answer:
182.82
Step-by-step solution: 1. Use the property of proportions: a/b = c/x. 2. Cross-multiply: x = (b * c) / a = (21 * 148) / 17. 3. Compute x = 182.82.
69
If 17 : 19 :: 120 : x, find x.
Answer:
134.12
Step-by-step solution: 1. Use the property of proportions: a/b = c/x. 2. Cross-multiply: x = (b * c) / a = (19 * 120) / 17. 3. Compute x = 134.12.
70
If 14 : 18 :: 170 : x, find x.
Answer:
218.57
Step-by-step solution: 1. Use the property of proportions: a/b = c/x. 2. Cross-multiply: x = (b * c) / a = (18 * 170) / 14. 3. Compute x = 218.57.