QUANTITATIVE APTITUDE SET - 10

                                          Quant Quiz For AAO | SO | Syndicate Manipal

1. Raveena could get equal number of Rs.55, Rs.85 and Rs.105 tickets for a movie, she spent Rs.2940 for all the tickets, how many of each did she buy?
a) 12
b) 18
c) 16
d) Can't be determined
e) None of these
Ans: a) Let the number of tickets of each value = X.
Then, 55X + 85X + 105X = 2940 => X = 12.

2. The respectively ratio between the present age of Aarti and Savita is 5 : X. Aarti is 9yr younger than Jahnavi. Jahnavi's age after 9yr will be 33yr. The difference between Savita's and Aarti's age is same as the present age of Jahnavi. What will come in place of X?
a) 21
b) 37
c) 17
d) Can't be determined
e) None of these
Ans: e) jahnavi's present age = 33 - 9 = 24yr, Aarti's present age = 24 - 9 = 15yr
Now, Aati : Savita = 5 : X = 15 : 3X => Sabita's present age = 3X yr
3X - 15 = 24 => X = 13.

3. Ruby's monthly income is 3 times Gayatri's monthly income. Gayatri's monthly income is 15% more than Priya's monthly income, Priya's monthly income is Rs.32000. What is Ruby's annual income?
a) 120300
b) 1324800
c) 38800
d) 54600
e) None of these
Ans: b) Gayatri's monthly income = (32000*115)/100 = 36800
Ruby's annual income = (12*3*36800) = 1324800.

4. A HR company employees 4800 people, out of which 45% are males and 60% of the males are either 25yr or older. How many males are employed in HR company who are younger than 25yr?
a) 2480
b) 2320
c) 1278
d) 864
e) None of these
Ans: d) Number of males in company = (4800*45)/100 = 2160
Number of males younger than 25yr = (2160*40)/100 = 864.

5. The age of Surabhi and Neerja are in the ratio of  6 : 7. After 6yr the ratio of their will ages will be 15 : 17. What is the age of Neerja?
a) 24yr
b) 32yr
c) 26yr
d) 28yr
e) None of these
Ans: d)

6. In a class of 90 students, amongst 50% of the students each student for a number of sweets that are 20% of the total number of students and amongst the remaining 50% of the students each student got a number of sweets that are 10% of the total number of students. How many sweets were distributed among the 90 students?
a) 1620
b) 1215
c) 960
d) Can't be determind
e) None of these
Ans: b) Total student = 90, Total number of sweets = 45*90*20/100 + 45*90*10/100
= 45*18 + 45*9 = 1215.

7. Mrs. Sharma invests 15% of her monthly salary, i.e., Rs.4428 in Mutual funds. Later she invest 18% of her monthly salary on Pension Policies; also, She invests another 9% of her salary in Insurance Policies. What is the total monthly amount invested by Mrs. Sharma?
a) 113356.80
b) 12398.40
c) 56678.40
d) Can't be determined
e) None of these
Ans: b) Let monthly salary = X. 15% of X = 4428, X = 4428/15 * 100 = 29520
Total investment = (15% + 18% + 9%) = 42% of X = 42/100 * 29520 = 12398.40

8. 12 men can complete a work in 8 days. 16 women can complete the same work in 12 days. 8 men and 8 women started working and worked for 6 days. How many more men are to be added to complete the remaining work in a day?
a) 8
b) 6
c) 12
d) 16
e) None of these
Ans: c)

9. A hall whose length is 6 m and breadth twice its height takes 168 m of paper 2 m wide for its four walls. Find the area of the floor.
a) 192 m^2
b) 72 m^2
c) 96 m^2
d) 180 m^2
e) None of these
Ans: a) Let height = h, Now breadth = 2h, Area of wall = 2(16+2h)*h
=> 2(16+2h)*h = 168*2, h = 6 and breadth = 12, Area of floor = 16*12 = 192 m^2.

10. If sum of three numbers is 65. If the ratio of the first to second number is 5 : 3 and that of the second and third number is 7 : 3, then what is the second number?
a) 9
b) 15
c) 21
d) 35
e) None of these
Ans: c)The ratio among the three number = 35 : 21 : 9
Second Number = 65/(35+21+9)*21 = 21.