Ratio and Proportion Mock Test | Quantitative Aptitude | RRB NTPC

Q1. The mode of the dataset 11, 12, 13, 13, 14, 13 is:

11 12 13 14

Q2. If a company's inventory turnover is exceptionally high, it could imply:

A large amount of capital tied up in inventory. Inefficient inventory management and potential stockouts. Strong sales and efficient inventory control. Lower profit margins due to bulk purchasing discounts.

Q3. Three numbers are in harmonic progression. If the first term is 10 and the third term is 30, find the second term.

12 15 18 20

Q4. Inventory Turnover Ratio is an example of which type of ratio?

Liquidity Ratio Profitability Ratio Activity Ratio Leverage Ratio

Q5. If x/y = 3/4 and y/z = 5/7, what is x:z?

15:28 3:7 12:35 4:5

Q6. In a 100 meter race, A runs at 8 km/hr. If A gives B a start of 4 meters, A beats B by 10 seconds. What is the speed of B?

5 km/hr 6 km/hr 7 km/hr 8 km/hr

Q7. A, B, and C started a partnership. A invested Rs. 1,00,000. After 6 months, B joined with Rs. 1,50,000. After 8 months from the start, C joined with Rs. 2,00,000. If the total profit at the end of the year is Rs. 90,000, what is C's share?

Rs. 30,000 Rs. 32,000 Rs. 36,000 Rs. 40,000

Q8. A trader mixes 10 kg of rice worth Rs. 12 per kg with 15 kg of rice worth Rs. 15 per kg. He sells the mixture at Rs. 14.4 per kg. What is his profit percentage?

10% 12% 15% 20%

Q9. A and B entered into a partnership. A invested Rs. 40,000 and B invested Rs. 60,000. A’s business is to be managed by A himself, for which he is entitled to a commission of 5% on the net profit. The net profit before commission is Rs. 73,500. What is the share of B in the profit?

Rs. 34,500 Rs. 35,000 Rs. 36,750 Rs. 38,000

Q10. If a train travels 300 km in 4 hours, how long will it take to travel 900 km?

8 hours 10 hours 12 hours 14 hours

Q11. The average of the first 12 natural numbers is:

6 6.5 7 7.5

Q12. Ram purchased two articles for ₹1000 each. He sold the first article at a profit of 20% and the second article at a loss of 10%. Calculate his overall profit or loss percentage.

5% profit 5% loss 10% profit 10% loss

Q13. A sum of money is borrowed at 7% per annum compound interest and is repaid in 2 equal annual installments of Rs. 20,000 each. What is the principal amount?

Rs. 35,000 Rs. 35,500 Rs. 36,000 Rs. 36,500

Q14. If $\frac{a+b}{a-b} = \frac{3}{2}$, find $\frac{a^2+b^2}{a^2-b^2}$ using Componendo and Dividendo.

$\frac{13}{5}$ $\frac{5}{13}$ $\frac{25}{1}$ $\frac{1}{25}$

Q15. The number of hours worked and the amount earned are in:

Inverse proportion Direct proportion No proportion Constant proportion

Q16. Pipe A fills a cistern in 4 hours. Pipe B fills it in 6 hours. If pipe A is closed after 3 hours, how much time will pipe B take to fill the remaining part?

3 hours 3.5 hours 4 hours 4.5 hours

Q17. If 2x - 5 = 3, what is x?

3 4 5 6

Q18. Find the sum of the first 5 terms of the GP: 3, -6, 12, ...

-33 33 -31 31

Q19. If $$\frac{\sqrt{x}+\sqrt{y}}{\sqrt{x}-\sqrt{y}} = \frac{\sqrt{a}+\sqrt{b}}{\sqrt{a}-\sqrt{b}}$$, then by componendo and dividendo, $$\frac{x}{y}$$ is equal to:

$$\frac{a}{b}$$ $$\frac{b}{a}$$ $$\frac{a+b}{a-b}$$ $$\frac{a-b}{a+b}$$

Q20. A student's average score in 4 subjects is 75. He claims his average is 78. His total score is 300. If he scores 90 in the fifth subject, what is the average of all 5 subjects?

77.5 78.0 78.5 79.0

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