Mock Test

Exam: RRB Group D Subject: Mathematics Topic: Percentage

Total Questions: 20

Q1. A and B started a business with equal investments. After 9 months, A withdrew half of his investment. What is the ratio of their profit at the end of one year?

1:1 3:4 4:3 5:6
Q2. What is 0.1 expressed as a percentage?

1% 100% 0.1% 10%
Q3. If a player uses 80% of their mana for a spell, and their total mana is 150, how much mana is remaining?

20 25 30 35
Q4. A person travels 60% of a distance at a speed of 40 km/hr and the remaining 40% at a speed of 60 km/hr. What is the average speed for the entire journey?

46 km/hr 48 km/hr 50 km/hr 52 km/hr
Q5. What is 22% of 150?

30 32 33 35
Q6. If a player spends 60% of their game time on offense and 25% on defense, what percentage of their time is spent on other activities?

10% 15% 20% 25%
Q7. A train travels at 50 km/h. How far will it travel in 2 hours?

25 km 50 km 100 km 200 km
Q8. What is 20% of 300?

30 40 50 60
Q9. If the imaginary part of a complex number is 20 and its modulus is 25, what percentage of the modulus is the real part?

10% 20% 30% 40%
Q10. A fruit seller had some apples. 10% were rotten. He sold 60% of the remaining apples and still had 18 apples left. How many apples did he have initially?

40 45 50 55
Q11. If 50% of the edges in a connected graph are part of a spanning tree, what is the minimum number of edges in the graph if it has 10 vertices?

10 15 20 25
Q12. A cyclist covers a distance of 40 km in 4 hours. What is their average speed?

5 km/hr 8 km/hr 10 km/hr 20 km/hr
Q13. A bag contains 20% apples and the rest are oranges. If 30% of the apples are removed and 20% of the oranges are added, what is the new percentage of apples in the bag?

15% 16% 18% 20%
Q14. If a compound statement is formed using 'AND' and both simple statements are True, what is the percentage of truth in the compound statement?

0% 50% 75% 100%
Q15. If the demand for a good falls by 10% and the supply remains unchanged, what is the likely impact on the equilibrium price?

Price increases Price decreases Price remains the same Cannot be determined
Q16. By selling a watch for Rs. 350, a shopkeeper makes a profit of 25%. What is the cost price of the watch?

Rs. 250 Rs. 260 Rs. 280 Rs. 300
Q17. What is 80% of 25?

10 15 20 25
Q18. In a graph G, if 50% of the vertices have degree 1, and 70% of the edges have at least one endpoint with degree 1, what is the minimum percentage of edges connecting two vertices of degree greater than 1?

10% 20% 30% 40%
Q19. What is the compound interest on Rs. 5000 for 2 years at 8% per annum?

Rs. 800 Rs. 832 Rs. 1600 Rs. 864
Q20. The ratio of the ages of A and B is 2:3. If A was 4 years younger than B, their ages would be in the ratio 1:2. What is the present age of B?

8 years 12 years 16 years 20 years

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