Arithmetic Questions for RRB Group D: Download Free PDF

Want to join Indian Railways as a Track Maintainer, Assistant Pointsman, or in the Signal & Telecom department? The RRB Group D exam is your biggest opportunity. However, we know that for many of you, the path to this dream has become tough due to exams, and one of the toughest sections is mathematics. Most students from non-math backgrounds get scared just by hearing words like “Compound Interest” or “Time & Work.” You might feel that you can never solve these questions. But the good part is that arithmetic in the RRB Group D is not advanced math. To help you with this, we have provided exam-level arithmetic questions for RRB Group D exam in a PDF that you can download for free from this blog.

Why is Arithmetic Important for RRB Group D?

In the Mathematics section (25 questions), Arithmetic is the “King.” It covers nearly 70% of the syllabus.

• Maximum Weightage: Topics like Percentage, Profit & Loss, SI/CI, and Time & Work alone cover 12 to 15 questions.
• Real-Life Logic: You don’t need complex theorems here. Common sense works best. For example, if 2 men do a job in 4 days, 4 men will do it faster (2 days). Simple.
• Formula-Based: Questions are often direct applications of standard formulas. If you know SI = (PxRxT)/100, you get the mark.

Download Free PDF of Arithmetic Questions for RRB Group D

We have prepared a comprehensive PDF containing exam-level questions. We have chosen questions that match the exact difficulty level of RRB Group D—simple, direct, and scoring. Download it, save it, and practice these questions to remove your fear of math.

Q1. A man buys a radio for ₹800 and sells it for ₹1000. Find his profit percentage.

(a) 20%
(b) 25%
(c) 30%
(d) 15%

Answer: (b) 25%

Logic:
Profit = 1000 − 800 = 200
Profit % = (200 ÷ 800) × 100 = 25%

Q2. A and B together can complete a work in 15 days, and A alone can complete it in 20 days. In how many days can B alone complete the work?

(a) 60 days
(b) 45 days
(c) 30 days
(d) 40 days

Answer: (a) 60 days

Logic:
Use formula: (x × y) ÷ (y − x)

Here x = 15, y = 20

(15 × 20) ÷ (20 − 15) = 300 ÷ 5 = 60 days

(OR)
Total work = 60 units
A + B = 4 units/day
A = 3 units/day
So B = 1 unit/day
Time = 60 ÷ 1 = 60 days

Q3. Find the Simple Interest on ₹5000 at 10% per annum for 3 years.

(a) ₹1000
(b) ₹1500
(c) ₹2000
(d) ₹1200

Answer: (b) ₹1500

Logic:
SI = (P × R × T) ÷ 100
SI = (5000 × 10 × 3) ÷ 100 = 1500

Q4. The average of 5 consecutive numbers is 20. The largest of these numbers is:

(a) 20
(b) 22
(c) 24
(d) 21

Answer: (b) 22

Logic:
Average = middle number
Numbers = 18, 19, 20, 21, 22
Largest = 22

Q5. A train 150 meters long is running at a speed of 54 km/hr. Time taken to cross a pole is:

(a) 8 sec
(b) 10 sec
(c) 12 sec
(d) 15 sec

Answer: (b) 10 sec

Logic:
Convert speed into m/s:
54 × (5 ÷ 18) = 15 m/s

Time = Distance ÷ Speed
Time = 150 ÷ 15 = 10 seconds

Q6. If the ratio of A : B is 2 : 3 and B : C is 4 : 5, then find A : B : C.

(a) 8 : 12 : 15
(b) 2 : 3 : 5
(c) 8 : 12 : 20
(d) 6 : 12 : 15

Answer: (a) 8 : 12 : 15

Logic:
Make B equal in both ratios.

A : B = 2 : 3 → multiply by 4 → 8 : 12
B : C = 4 : 5 → multiply by 3 → 12 : 15

So A : B : C = 8 : 12 : 15

Q7. By selling an article for ₹720, a shopkeeper loses 10%. To gain 5%, he should sell it for:

(a) ₹800
(b) ₹840
(c) ₹850
(d) ₹900

Answer: (b) ₹840

Logic:
₹720 is 90% of Cost Price

1% = 720 ÷ 90 = 8

To gain 5% → need 105%

105 × 8 = ₹840

Q8. A sum of money doubles itself in 10 years at Simple Interest. What is the rate of interest?

(a) 5%
(b) 10%
(c) 20%
(d) 8%

Answer: (b) 10%

Logic:
If money doubles → total interest = 100%

Rate = (100 ÷ 10) = 10% per year

Q9. 12 men can complete a work in 16 days. In how many days can 8 men complete the same work?

(a) 20
(b) 24
(c) 32
(d) 18

Answer: (b) 24

Logic:
M₁D₁ = M₂D₂

12 × 16 = 8 × D
192 = 8D
D = 24 days

Q10. The price of sugar is increased by 20%. By what percent should a housewife reduce her consumption to keep the expenditure same?

(a) 20%
(b) 25%
(c) 16.66%
(d) 10%

Answer: (c) 16.66%

Logic:
Required decrease % = (R ÷ (100 + R)) × 100

= (20 ÷ 120) × 100
= 1/6 × 100
= 16.66%

5 Preparation Tips to Master Arithmetic

Arithmetic is not about calculating faster; it is about calculating smarter. You don’t need to fill pages with rough work. To crack the RRB Group D math section, you need a strategy that focuses on basics. Here are 5 simple, actionable tips that will help you solve questions in under a minute and remove your fear of word problems:

1. Learn Tables & Squares: This is non-negotiable. Memorize multiplication tables up to 20 and squares up to 25. This small step will double your calculation speed in topics like Simplification and Area.
2. Master the Unitary Method: This is the magic key for Arithmetic. Whether it is “Cost of 5 pens” or “Work done by 3 men,” always find the value of 1 unit first. It solves 80% of Group D problems.
3. Fractions to Percentage: Don’t calculate 20% of 500 by writing 20/100 x 500. Just know that 20% = 1/5. So, 1/5 of 500 is 100. Memorize fractions like 1/2 to 1/10.
4. Understand “Time & Work” Logic: Don’t memorize complex formulas for Time & Work. Use the LCM Method (Total Work = LCM of days). It is visually easier and works for every type of question.
5. Attempt Topic Tests: Reading formulas is not enough. You must apply them. Attempt our Free Topic Tests to train your brain to identify the correct method immediately.

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