Mock Test

Exam: RRB Group D Subject: Mathematics Topic: Percentage

Total Questions: 20

Q1. The price of an article was first increased by 10% and then by 20%. If the original price was ₹1000, what is the final price?

₹1300 ₹1320 ₹1200 ₹1330
Q2. What is 30% expressed as a fraction?

3/10 3/100 1/3 10/3
Q3. If 20% of A = 30% of B and 40% of B = 50% of C, then what percentage of A is C?

50% 60% 75% 80%
Q4. If 60% of a complex number is 12 + 18i, what is the complex number?

20 + 30i 12 + 18i 7.2 + 10.8i 14.4 + 21.6i
Q5. Convert the percentage 40% to a decimal.

0.04 0.4 4 40
Q6. A car travels at a speed of 60 km/hr. How far will it travel in 3 hours?

60 km 120 km 180 km 240 km
Q7. The sum of the present ages of A and B is 40 years. If B were twice as old as A, his age would be 5 years more than A's current age. What is the present age of A?

10 years 15 years 20 years 25 years
Q8. What is the simple interest on ₹10000 for 6 months at 5% per annum?

₹200 ₹225 ₹250 ₹275
Q9. If the price of a product is reduced by 5% from ₹80, what is the new price?

₹76 ₹84 ₹4 ₹78
Q10. A man spends 30% of his income on rent and 20% of the remaining income on food. If he has Rs. 4200 left, what is his total income?

Rs. 8000 Rs. 9000 Rs. 10000 Rs. 12000
Q11. In what ratio should a merchant mix tea at Rs. 50 per kg with tea at Rs. 65 per kg so that by selling the mixture at Rs. 60 per kg, he gains 10%?

3:2 2:3 5:2 2:5
Q12. A price is reduced by 10% and then increased by 10%. What is the net percentage change in price?

1% increase 1% decrease 0% change 2% decrease
Q13. If the price of an article is increased by 20% and then decreased by 10%, what is the net percentage increase or decrease?

8% increase 8% decrease 10% increase 10% decrease
Q14. If 40% of the students in a class are girls, and 60% of the boys passed the exam, and 75% of the girls passed the exam, what percentage of students passed the exam?

57% 60% 63% 66%
Q15. If the value of a game is ₹60,000 and Player A's share is 70%, what is Player B's share?

₹18,000 ₹24,000 ₹30,000 ₹42,000
Q16. If 40% of the elements in a universal set U are in set A, and 30% are in set B. If 15% are in both A and B, what is the minimum percentage of elements that must be in neither A nor B?

30% 35% 40% 45%
Q17. P and Q invest Rs. 6000 and Rs. 8000 respectively. P invested for 10 months and Q invested for 8 months. If the total profit is Rs. 22000, what is Q's share?

Rs. 10000 Rs. 11000 Rs. 12000 Rs. 13000
Q18. If 40% of a number is 200, then 75% of that number is:

375 350 300 325
Q19. The population of a town increases by 10% in the first year and decreases by 5% in the second year. What is the net percentage change in population after two years?

4.5% increase 5% increase 4.5% decrease 5.5% increase
Q20. If the price of a commodity is increased by x% and then decreased by x%, the net percentage change is:

x% increase x% decrease (x^2)/100 % increase (x^2)/100 % decrease

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