Quantitative Aptitude Questions and Answers - Percentage
11. Rahul gets 75% marks in examinations. If these are 600 marks, find the maximum marks.
A. 800
B. 900
C. 1000
D. 1200
View Answer
Ans : A
Explanation: Let the maximum marks be x
Then 75 % of x = 600
75/100 × x = 600
x = (600 × 100)/75
s = 800
Therefore, maximum marks in the examinations are 800.
12. A cricket team lost 60% of the matches it played. If it won 40 matches, find the number of matches it
played.
A. 80
B. 90
C. 100
D. 120
View Answer
Ans : C
Explanation: Percentage of matches lost = 60%
Therefore Percentage of matches won (100 - 60) % = 40%
Let the number of matches played be x.
Then 40 % of x = 40
40/100 × x =40
x = (40 × 100)/40
x = (4000)/40
x = 100
Therefore, the total number of matches played is 100
13. In a basket of eggs, 25% of them are rotten and 30 are in good condition. Find the total number of eggs in
the basket.
A. 35
B. 40
C. 45
D. 50
View Answer
Ans : B
Explanation: Let the total number of eggs in the basket be x
25 % of the eggs are rotten, and eggs in good condition are 30
Therefore, according to the question,
75% of x = 30
75/100 × x = 30
x = (30 × 100)/75
x = 40
Therefore, total number of eggs in the basket is 40
14. One fifth of third of half of a number is 50.What will be 20% of that number?
A. 250
B. 300
C. 350
D. 400
View Answer
Ans : B
Explanation: (1/5) ×(1/3)×(1/2)× x = 50
x/30 =50
x = 50*30
x = 1500
20 % of 1500
= 300
15. Two employees A and B are paid a total of Rs. 5000 per week by their employer. If A is paid 150 percent
of the sum paid to B, how much is B paid per week?
A. 1900
B. 2000
C. 2050
D. 2100
View Answer
Ans : B
Explanation: Let the amount paid to A per week = x
and the amount paid to B per week = y
Then x + y = 5000
But x = 150% of y
= 150y/100
= 15y/10
∴15y/10 + y = 5000
⇒ y[15/10 + 1] = 5000
⇒ 25y = 50000
⇒ y = 50000/25
y = Rs.2000
16. Forty percent of Mouli’s annual salary is equal to 160% of Surya’s annual salary. Surya’s monthly salary
is 80%of Gowthaman’s monthly salary. If Gowthaman’s annual salary is ` 12 lacs, what is Mouli’s monthly
salary ?
A. 180000
B. 120000
C. 320000
D. 250000
View Answer
Ans : C
Explanation: Gowthaman’s monthly salary = 12,00,000/12
= 1,00,000
Surya’s monthly salary = 1,00,000 x 80/100
= 80,000
Mouli’s monthly salary = 80,000x 1600/40
=3,20,000
17. A candidate scoring 50% in an examination fails by 60 marks , while another candidate scores 75 %
mark, gets 40 marks more than the minimum pass marks . Find the minimum pass mark.
A. 180
B. 200
C. 210
D. 220
View Answer
Ans : D
Explanation: Let x be the maximum marks,
Then (50% of x)+60 = (75% of x)-40
x/2 +60 = 3x/4 -20
60+20 = 3x/4 – x/ 2
X=320
Hence maximum marks = 320
Minimum pass marks = 320/2 + 60 = 220
18. Find the increase value if 450 is increased by 90 %.
A. 850
B. 855
C. 860
D. 865
View Answer
Ans : B
Explanation: Increase = 90 % of 450
= 90/100 × 450
= 40500/100
= 405
Therefore, increase value = 450 + 405 = 855
19. In an election between two candidates, one got 45% of the total valid votes, 40% of the votes were
invalid. If the total number of votes was 15000, the number of valid votes that the other candidate got, was .
A. 4900
B. 4950
C. 5000
D. 5050
View Answer
Ans : B
Explanation: Total number of votes = 15000
Given that 40% of Percentage votes were invalid
=> Valid votes = 60%
Total valid votes = 15000* 60/100
1st candidate got 45% of the total valid votes.
Hence the 2nd candidate should have got 55% of the total valid votes
=> Valid votes that 2nd candidate got = total valid votes x 55/100
=15000*60/100*55/100
=4950
20. In a college election between two candidates, one candidate got 25% of the total valid votes. 30% of the
votes were invalid. If the total votes were 7600, what is the number of valid votes the other candidate got ?
A. 3990
B. 4000
C. 4050
D. 4100
View Answer
Ans : A
Explanation: Total valid votes = 70% of 7600 = 5320
Number of valid votes to other candidate = 75% of 5320
= 75/100 *5320
= 399000/100
= 3990
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