Quantitative Aptitude Set -483
Jan 27 2025
Here we are providing new series of Quantitative Aptitude Questions for upcoming exams, so the aspirants can practice it on a daily basis.
1) The average of the boys and girls in the class is 45 and the ratio of the boys to girls in the class is 5: 4. If 10 boys left the class and 16 girls joined the
A.5: 7
B.4: 5
C.7: 9
D.11: 13
E.None of these
2) Rs.25500 is divided among A, B and C. A gets Rs. 4000 more than B and C gets Rs. 8000 more than B. Find the ratio of amount received by A, B and C?
A.13: 7: 21
B.11: 15: 17
C.17: 9: 25
D.22: 17: 13
E.None of these
3) The number of students in 3 classes is in the ratio 6:7:8. If 15 students are increased in each class this ratio changes to 9:10:11. The total number of students in the three classes in the beginning was
A.90
B.112
C.105
D.75
E.None of these
4) A, B and C together have Rs. 23400. If 4/15th of A’s amount is equal to 2/5th of B’s amount and 5/8th of B’s amount is equal to 9/16th of C’s amount, then how much amount does C have?
A.Rs. 13800
B.Rs. 12500
C.Rs. 11000
D.Rs. 7200
E.None of these
5) Incomes and Raji and Moni are in the ratio 5 : 6 and their expenditures are in the ratio 10 : 13. If Raji saves Rs.5000 and Moni saves Rs. 4000, then find the expenditure of Raji?
A.Rs. 16000
B.Rs. 18000
C.Rs. 24000
D.Rs. 20000
E.None of these
Answers :
1) Answer: A
Total students in the class = 45 * 2 = 90
Number of boys = 5/9 * 90 = 50
Number of girls = 4/9 * 90 = 40
Current number of boys in the class = 50 – 10 = 40
Girls = 40 + 16 = 56
Required ratio = 40: 56 = 5: 7
2) Answer: C
Let us take amount received by B = x
A = x+ 4000
C = x+ 8000
A+B+C =25500
(x+4000) + x + (x+ 8000) = 25500
3x + 12000 = 25500
3x = 13500
x=4500
Ratio of amount received by A, B and C = (4000+4500): 4500: (4500+8000)
= 8500: 4500: 12500
= 85: 45: 125 = 17: 9: 25
3) Answer: C
Let the number of students in the classes be 6x, 7x and 8x respectively;
Total students = 6x+7x+8x = 21x.
Then (6x+15)/(7x+15)=9/10
60x+150=63x+135
x=5
Total students =21*5=105.
4) Answer: D
A + B + C = Rs. 23400
(4/15)* A = (2/5)* B
(A/B) = (2/5) * (15/4) = 3/2
(5/8)* B = (9/16)* C
(B/C) = (9/16) * (8/5) = 9/10
The ratio of A, B and C = 27 : 18 : 20
65’s = 23400
1’s = 360
C’s share = 20’s = Rs. 7200
5) Answer: D
The ratio of income of Raji and Moni = 5 : 6
According to the question,
(5x – 5000)/(6x – 4000) = 10/13
=> 65x – 65000 = 60x – 40000
= > 5x = 25000
=> x = 5000
Income of Raji = 5x = 5 * 5000 = Rs. 25000
Expenditure of Raji = 25000 – 5000 = Rs. 20000
