Preparing for the Railway Group D exam? Mathematics is a crucial section that requires practice and a clear understanding of concepts. In this post, we provide Railway Group D previous year maths questions along with their solutions to help you grasp the problem-solving techniques and improve your accuracy.
If you are preparing for the RRB Group D exam, practicing previous year questions can be immensely helpful. In this blog, we will go through some important percentage-related questions from past RRB Group D exams, complete with solutions.
What You’ll Learn:
- Important maths topics covered in the Railway Group D exam
- Solved examples with step-by-step explanations
- Shortcuts and tricks for faster calculations
- Topic-wise analysis of previous year trends
Why Practice Previous Year Questions?
Practicing previous year questions helps you understand the exam pattern, identify frequently asked topics, and improve your speed and accuracy. By solving these questions with proper solutions, you can build confidence and avoid common mistakes.
Start Practicing Now and Boost Your Score!
1. If the cost price of an article is Rs. 2500 and its selling price is Rs. 2375, then the loss percentage is:
(Group D, 17 Aug, 2022)
A) 5%
B) 6%
C) 3%
D) 4%
Solution: Loss = Cost Price – Selling Price = 2500 – 2375 = Rs. 125
Loss % = (Loss / Cost Price) * 100 = (125 / 2500) * 100 = 5%
Answer: A) 5%
2. Last year, Ranjan’s monthly salary was Rs. 34500 and this year his monthly salary is Rs. 38640. What is the percentage increase in his salary?
(Group D, 17 Aug, 2022)
A) 20%
B) 12%
C) 13%
D) 15%
Solution: Increase = New Salary – Old Salary = 38640 – 34500 = 4140
Percentage Increase = (Increase / Old Salary) * 100 = (4140 / 34500) * 100 ≈ 12%
Answer: B) 12%
3. In a clearance sale, a sari whose marked price was Rs. 10490 is now sold for Rs. 9441. What is the discount percentage?
(Group D, 18 Aug, 2022)
A) 18%
B) 10%
C) 12%
D) 15%
Solution: Discount = Marked Price – Selling Price = 10490 – 9441 = 1049
Discount % = (1049 / 10490) * 100 = 10%
Answer: B) 10%
4. If 10% of 24% of x is 240, then x = ?
(Group D, 18 Aug, 2022)
A) 100
B) 1000
C) 10000
D) 100000
Solution: (10/100) * (24/100) * x = 240
0.10 * 0.24 * x = 240
x = 240 / (0.10 * 0.24) = 10000
Answer: C) 10000
5. A student scored 80/80 in Term 1 and 75/90 in Term 2. If the weightage given to the terms is 40% and 60% respectively, what is the final percentage score?
(Group D, 22 Aug, 2022)
A) 85%
B) 90%
C) 95%
D) 70%
Solution: Term 1 percentage = (80/80) * 100 = 100%
Term 2 percentage = (75/90) * 100 = 83.33%
Final Percentage = (100 * 40/100) + (83.33 * 60/100) = 40 + 50 = 90%
Answer: B) 90%
6. The price of an article is increased by 20% and then two successive discounts of 5% each are allowed. The final percentage increase is:
(Group D, 22 Aug, 2022)
A) 8.3%
B) 7.8%
C) 9.2%
D) 6.9%
Solution: Net effect = (20 – (5 + 5) + (5 * 5)/100) = 7.8%
Answer: B) 7.8%
7. Rajiv’s salary was first decreased by 40% and then increased by 50%. What is the net percentage loss?
(Group D, 23 Aug, 2022)
A) 15%
B) 10%
C) 14%
D) 12%
Solution: Net Change = (−40 + 50 + (−40 * 50)/100) = 10% loss
Answer: B) 10%
8. Mohan’s present sale is Rs. 128800. If he had a 12% increase in the first year and a 15% increase in the second year, what was his sale two years ago?
(Group D, 25 Aug, 2022)
A) 125000
B) 100000
C) 175000
D) 150000
Solution: Initial Sale = 128800 / (1.12 * 1.15) = 100000
Answer: B) 100000
9. A shopkeeper allows successive discounts of 20% and 15% on a marked price of Rs. 2000. What is the final selling price?
(Group D, 25 Aug, 2022)
A) 1300
B) 1360
C) 1240
D) 1200
Solution: Final Price = 2000 * (80/100) * (85/100) = 1360
Answer: B) 1360
10. If 18% of 200 = x, then x = ?
(Group D, 01 Sep, 2022)
A) 36
B) 27
C) 72
D) 63
Solution: 18% of 200 = (18/100) * 200 = 36
Answer: A) 36
