Percentage · solved example
In a company of 200 employees, 35% are posted on border duty. How many employees are on border duty?
- 70Correct
- 65
- 75
- 80
Solution
35% of 200 = 35/100 × 200 = 70 employees.
Defence | SSB Head Constable (Non-GD)
SSB Head Constable (Non-GD) sets 25 Mathematics questions for 25 marks in the Written Examination (Objective OMR/CBT), so it is worth planning your preparation around the topics below.
The quantitative core of the railway papers: arithmetic, mensuration, and time-speed-distance built on a secondary-school foundation. Fluency with fractions, percentages and ratios underlies almost every question, so that is where practice pays back fastest.
How much Mathematics is worth in each SSB Head Constable (Non-GD) stage, from the official pattern.
| Stage | Questions | Marks | Time | Share |
|---|---|---|---|---|
| Written Examination (Objective OMR/CBT) | 25 | 25 | — | 25% |
Every topic in the official syllabus. The linked ones open a set of solved questions you can practise straight away.
Written to the SSB Head Constable (Non-GD) 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.
Percentage · solved example
In a company of 200 employees, 35% are posted on border duty. How many employees are on border duty?
Solution
35% of 200 = 35/100 × 200 = 70 employees.
Ratio · solved example
Divide Rs 360 between A and B in the ratio 4 : 5. How much does B receive?
Solution
B's share = 5/(4+5) × 360 = 5/9 × 360 = 200 rupees.
Time and work · solved example
A task is completed by 6 workers in 8 days. How many days will 4 workers take to complete the same task (same efficiency)?
Solution
Total work = 6 × 8 = 48 worker-days. With 4 workers, days needed = 48/4 = 12 days.
Simple interest · solved example
Find the simple interest on Rs 5,000 at 8% per annum for 3 years.
Solution
SI = P × R × T / 100 = 5000 × 8 × 3 / 100 = 1,200 rupees.
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Mathematics shows up in every SSB Head Constable (Non-GD) mock test, in the same interface, with sectional locking and negative marking.
SSB Head Constable (Non-GD): 16-question practice mock
16 questions | 20 min
SSB Head Constable (Non-GD) 2026 cycle (Advt. 524/RC/SSB/Combined Advt./CT to SI (Non-GD)/2025A) sets 25 Mathematics questions for 25 marks in the Written Examination (Objective OMR/CBT).
No. The SSB Head Constable (Non-GD) written stage carries no negative marking, so it is worth attempting every Mathematics question you can.
The SSB Head Constable (Non-GD) syllabus lists Number system and basic arithmetic, Percentage, ratio, proportion and averages, Profit and loss, simple and compound interest, Time and work, time, speed and distance, Simple mensuration and basic geometry. Weight your revision towards the ones you are weakest on and confirm the emphasis against the paper analysis for recent cycles.
Every Mathematics 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 SSB Head Constable (Non-GD) mock tests to sit it under a real clock with negative marking.