Boats and streams · solved example
A boat's speed in still water is 8 km/h and the stream flows at 4 km/h. Find its downstream speed.
- 10
- 6
- 14
- 18
- 12Correct
Solution
Downstream speed = 8 + 4 = 12 km/h.
SSC | SSC CPO
Quantitative Aptitude for SSC CPO
SSC CPO sets 50 Quantitative Aptitude questions for 50 marks in the Paper I (Computer Based Examination), so it is worth planning your preparation around the topics below.
50 questions50 marks7 topics
How to approach Quantitative Aptitude in SSC CPO
Speed decides this section. The arithmetic and data-interpretation sets are where the marks are, so the priority is a reliable method and quick calculation rather than exotic shortcuts. Lock down tables, squares and reciprocals, then drill data interpretation until reading the set is faster than solving it.
Weightage in the paper
How much Quantitative Aptitude is worth in each SSC CPO stage, from the official pattern.
| Stage | Questions | Marks | Time | Share |
|---|---|---|---|---|
| Paper I (Computer Based Examination) | 50 | 50 | 30 min | 25% |
Quantitative Aptitude syllabus for SSC CPO
Every topic in the official syllabus. The linked ones open a set of solved questions you can practise straight away.
- Number system and simplification
- Percentage, ratio, proportion and averages
- Profit, loss and discount
- Simple and compound interest
- Time and work, time, speed and distance
- Mensuration, geometry and trigonometry
- Data interpretation: bar, pie and tables
Sample Quantitative Aptitude questions with solutions
Written to the SSC CPO pattern, with the answer key and the method behind it — a look at how the section is actually set before you drill the full topic sets.
Number series · solved example
Find the next term: 9, 14, 21, 30, 41, ?
- 54Correct
- 52
- 56
- 62
- 46
Solution
Each term is a square plus 5: 2²+5, 3²+5, ... so the next is 7²+5 = 54.
Average · solved example
Find the average of 33, 37, 41, 45.
- 39Correct
- 35
- 37
- 43
- 41
Solution
The sum of the 4 numbers is 156, and dividing by 4 gives 39.
Boats and streams · solved example
A boat's speed in still water is 8 km/h and the stream flows at 3 km/h. Find its downstream speed.
- 5
- 14
- 8
- 11Correct
- 17
Solution
Downstream speed = 8 + 3 = 11 km/h.
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Practise Quantitative Aptitude
Untimed drills with the method shown after every question — the step between learning a topic and sitting it under a clock.
Calculation speed
195 questions, instant feedback
Data interpretation
105 questions, instant feedback
Mensuration, mixtures and counting
87 questions, instant feedback
Number series
93 questions, instant feedback
Percentage, profit and averages
123 questions, instant feedback
Quadratic equations
69 questions, instant feedback
Interest, ratio and partnership
117 questions, instant feedback
Simplification and approximation
108 questions, instant feedback
Time, speed, distance and work
108 questions, instant feedback
Sit Quantitative Aptitude under a real clock
Quantitative Aptitude shows up in every SSC CPO mock test, in the same interface, with sectional locking and negative marking.
- Start
SSC CPO: 28-question practice mock
28 questions | 28 min
Frequently asked questions
How many Quantitative Aptitude questions are asked in SSC CPO?
SSC CPO 2026 cycle sets 50 Quantitative Aptitude questions for 50 marks in the Paper I (Computer Based Examination).
Is there negative marking for Quantitative Aptitude in SSC CPO?
Yes. SSC CPO deducts one fourth of a mark for each wrong answer, Quantitative Aptitude included, so unsure guesses cost you. One fourth of a mark is deducted for each wrong answer; every question carries one mark. Unanswered questions carry no penalty.
Which Quantitative Aptitude topics matter most for SSC CPO?
The SSC CPO syllabus lists Number system and simplification, Percentage, ratio, proportion and averages, Profit, loss and discount, Simple and compound interest, Time and work, time, speed and distance, Mensuration, geometry and trigonometry and more. Weight your revision towards the ones you are weakest on and confirm the emphasis against the paper analysis for recent cycles.
How can I practise Quantitative Aptitude for SSC CPO free?
Every Quantitative Aptitude question on this site is free and written to the exam pattern. Use the topic drills for instant-feedback practice, the daily quiz to keep the section warm, and the SSC CPO mock tests to sit it under a real clock with negative marking.