This set of RRB NTPC 2025 arithmetic hard level mcqs It is important for the exam that difficult is designed to help you get better in solving mathematics problems. These 30 multi-favorite questions, profit and loss, time and work, average, ratio, and more include important subjects-all are based on RRB NTPC courses.
The questions are challenging and will test how well you understand the concepts. Answers are also given in the end so that you can check your performance and improve your preparation.
RRB NTPC 2025 arithmetic hard level MCQ with answers
1. A piece of work can be done in a 12 days and B can be B in 16 days. They work together for 4 days. C then completes the remaining work in 3 days. In how many days C can complete the entire work alone?
A) 10
B) 12
C) 14
D) 16
2. A boat can travel 36 km below in 3 hours and 30 km upwards in 5 hours. What is the speed of the stream?
A) 1 km/h
B) 2 km/h
C) 1.5 km/h
D) 2.5 km/h
3. The salary of a man was reduced by 25%. To restore your original salary, what percentage of their new salary should be increased?
A) 30%
B) 33.33%
C) 35%
D) 25%
4. A merchant marked his goods above 40% above the cost price. He gave a discount of 25% on the marked price. What is real profit or loss percentage?
A) 5% profit
B) 5% loss
C) 10% profit
D) No profit loss
A) 50%
B) 80%
C) 100%
D) 150%
6. The average age of the class of 40 students is 15 years. When a new student joins, the average increases to 0.2 years. What is the age of a new student?
A) 17
B) 23
C) 18
D) 20
7. Two pipes can fill a tank in 24 minutes and 32 minutes respectively. If the two are opened together, how long will it take them to fill the tank?
A) 13 minutes 43 seconds
B) 14 minutes
C) 13 minutes
D) 13 minutes 20 seconds
8. A mixture contains milk and water in the ratio of 3: 1. How much water should be added to 20 liters of this mixture to make the ratio 2: 1?
A) 2 L
B) 3l
C) 4L
D) 5l
9. A shopkeeper sells two watches on ₹ 1200 each. On one he acquires 20% and on the other hand he loses 20%. What is its overall benefit or disadvantage?
A) No loss benefits
B) 4% loss
C) 4% profit
D) 2.5% loss
10. There is a difference at 10% per year at 10% per year for 2 years at ₹ 5000 between cyclone interest and simple interest:
A) ₹ 50
B) ₹ 25
C) ₹ 100
D) ₹ 75
11. A train crosses a pole in 15 seconds and a 100 meter long platform in 25 seconds. Find the length of the train.
A) 150 m
B) 200 m
C) 250 m
D) 300 meters
12. A person invests ₹ 12,000 at a 10% compound interest annually. What will be the interest earned in 2 years?
A) ₹ 2520
B) ₹ 2400
C) ₹ 2650
D) ₹ 2550
13. A can complete a work in 15 days, B and 30 days c. If A is assisted by B and C on alternative days, in how many days the work will be completed?
A) 13
B) 14
C) 15
D) 12
14. The two numbers are in the ratio of 4: 5. If their HCF is 12, what is the LCM of numbers?
A) 240
B) 300
C) 360
D) 480
15. The average weight of 5 individuals increases to 2 kg when a new person weighing 68 kg changes one of them. What is the weight of a person?
A) 56
B) 58
C) 60
D) 62
16. A car covers a distance of 360 km in 6 hours. If the speed increases by 10 km/h, how long will it take to cover the same distance?
A) 5.5 pm
B) 5 o’clock
C) 4.5 pm
D) 4 hours
17. A number is more than 225 to 25%. what is the number?
A) 300
B) 400
C) 360
D) 280
18. A man purchases a product at a 10% discount on marked price. He sells it at a 20% profit at a marked price. What is its profit percentage?
A) 33.33%
B) 25%
C) 20%
D) 15%
19. A and B can work together in 8 days. B and C can do the same in 12 days. A and C can do it in 16 days. How long will it take to do C?
A) 24
B) 37
C) 48
D) 60
20. A man invests some money at 12% SI. In 4 years, he earns ₹ 1440 interest. What is the principal?
A) ₹ 3000
B) ₹ 4000
C) ₹ 5000
D) ₹ 6000
21. The sum of two numbers is 72 and their ratio is 5: 7. What is the difference between them?
A) 6
B) 12
C) 18
D) 24
22. If 12 men or 18 women can work in 15 days, how many days will it take for 8 men and 12 women to do the same thing?
A) 10
B) 12
C) 8
D) 9
23. A merchant marks more than 60% of his goods from the cost and provides 20% discount. What is its profit percentage?
A) 28%
B) 32%
C) 36%
D) 40%
24. The average of 6 consecutive numbers is 42. What is the smallest number?
A) 36
B) 38
C) 40
D) 42
25. A pipe fills a tank in 4 hours, but takes 5 hours due to leakage. How long will it take to empty the tank?
A) 15
B) 18
C) 20
D) 25
26. A man moves 18 km down in 2 hours and returns in 3 hours. What is still the speed of the boat in the water?
A) 6 km/h
B) 7 km/h
C) 8 km/h
D) 9 km/h
27. The difference between 35% of a number and 25% of the same number is 120. what is the number?
A) 800
B) 1000
C) 1200
D) 1500
28. The age of A and B is 4: 5. After 8 years, their ratio becomes 5: 6. What is the present age?
A) 32
B) 37
C) 40
D) 48
29. One amount becomes ₹ 1,210 in 2 years, which is 10% per year per year. What was the amount?
A) ₹ 1000
B) ₹ 1100
C) ₹ 1050
D) ₹ 1200
30. A person bought 80 pens for ₹ 640 and sold them at a profit equal to the selling price of 20 pens. What is the sale price of a pen?
A) ₹ 10
B) ₹ 12
C) ₹ 14
D) ₹ 16
answer
- D
- C
- B
- A
- C
- B
- A
- C
- B
- A
- B
- A
- B
- C
- A
- B
- A
- A
- C
- C
- C
- A
- A
- A
- C
- C
- B
- A
- A
- B