# Mixed Quantitative Aptitude Questions Set 45

Quantitative Aptitude Questions for IBPS RRB/PO/Clerk, SBI PO, NIACL, NICL, RBI Grade B/Assistant, BOI, Bank of Baroda and other competitive exams

1. If 90% of X = 30% of Y and Y = x% of X, then find the value of x .
A) 210
B) 150
C) 200
D) 300
E) 350
Option D
Solution:
(90 * X)/100 = (30 * Y)/100
=> Y = 3X
Y = (x*X)/100
=> 3X * 100 = x*X
=> x = 300
2. Fresh cherries contains 85% water by weight , whereas dried cherries contain 15% water by weight . How many kg of dried cherries can be obtained from 3.4kg of fresh cherries ?
A) 0.6kg
B) 0.5 kg
C)0.6 kg
D) 0.9 kg
E) 1.2 kg
Option C
Solution:
Fresh cherries * 15% = Dry cherries * 85%
=> Fresh / Dry = 85/15 = 17/3
Dried cherries can be obtained  from 3.4 kg of fresh cherries = (3/17)*3.4 =  0.6 kg
3. A man travels from A to B at a speed of 80 kmph and returns to B by increasing his speed by 50%. What is his average speed for both the journey?
A) 80 kmph
B) 75 kmph
C) 90 kmph
D) 96 kmph
E) 88 kmph
Option D
Solution:
speed from B to A = (80 * 150)/100 = 120 kmph
Average speed = (2 * 120 * 80)/(120+80) = 96 kmph
4. The volume of the cube is equal to the sum of its edges . What is its total surface area in square units?
A) 60 sq. units
B) 80 sq. units
C) 88 sq. units
D) 70 sq. units
E) 72 sq. units
Option E
Solution:
Let x be the side of the square.
Now, a^3 = 12a
=> a^2 = 12
Total surface area = 6a^2 = 6* 12 = 72 sq. units
5. If a certain sum of money becomes double itself in 3 years . In how much time will be 64 times of itself?
A) 11 years
B) 18 years
C) 20 years
D) 12 years
E) 15 years
Option B
Solution:
For the first time , the sum doubles = 2^1 ——- 3 years
2^6 = 64———- 6 * 3 = 18 years
6. Two pipes P and Q fills a cistern in 18 and 24 hrs respectively. Both filling pipes are open together but 6 hrs before the cistern will fill pipe P is closed. In how much time will the cistern take to fill ?
A) 15(1/4)hrs.
B) 11(1/7)hrs.
C) 12(1/2)hrs.
D) 13(5/7)hrs.
E) 10(1/3)hrs.
Option D
Solution:
A————– 18 hrs
B———— 24 hrs
Total capacity of the tank = 72 L
A can fill ———- 4 l/hr.
B can fill ———– 3 l/hr.
Pipe P is closed 6 hrs. before the cistern fill , so 24 l is filled by pipe Q
now total 72 + 24 = 96 is filled by both of them
Therefore, 96 / (3+4) = 96/7 = 13(5/7) hrs.
7. A tree was planted 2 years ago. It increases at the rate of 20% every year. If at present , the height of the rate is 540cm , what was it when the tree was planted?
A) 375 cm
B) 440 cm
C) 350 cm
D) 310 cm
E) 210 cm
Option A
Solution:
Let the height be x cm.
Therefore, 540 = x{1 + (20/100)}
=> 540 = x*(36/25)
=> x = (540*25)/36 = 375 cm
8. The respective ratio of curved surface area and total surface area of a cylindrical tank is 4 : 5 . If the curved surface area of the tank is 1232 cm^2 . What is the height of the tank in cm ?
A) 21 cm
B) 28 cm
C) 14 cm
D) 15 cm
E) 18 cm
Option B
Solution:
Let the radius be r cm and height be h cm.
Now ,
2*pi*r(r+h)/2*pi*r*h = 4/5
=> (h+r)/r = 4/5
=> r = h/4
Therefore, 2*pi*r*h = 1232
=> h^2 = (1232 *7*4)/(2*22)
=> h = √784 = 28 cm
9. To form a committee from a group of 5 women and 8 men , five persons are to be selected to form a committee so that atleast 4 men are there on the committee. In how many ways it can be done?
A) 395
B) 300
C) 412
D) 406
E) 330
Option D
Solution:
Total number of ways = 8C5 + 8C4 * 5C1
= 406 ways
10. Two cards are drawn from a deck of 52 cards. Find the probability of that the card drawn is a face card ?
A) 11/440
B) 21/425
C) 11/221
D) 13/423
E) 11/422
Option C
Required probability = 12C2/52C2 = 11/221

## 18 Thoughts to “Mixed Quantitative Aptitude Questions Set 45”

1. karthik

plz giving to us critical questions of misc chapters.

1. Banya

ok .. we will provide.

2. M@nish...

first ka ans .6 hoga

1. Navyaaaa

kyu? thik h 300

1. chinnu

i thnk he is mntioning about 2nd ques…what is ur 2nd ques ans ? iam gettng .6

1. Navyaaaa

2. M@nish...

second ka

1. Navyaaaa

solution bta do pls acche se explain kr k muje nhi aya 2nd

1. M@nish...

dekho fresh cherry ho ya dry cherry dono me fruit equal rahega bass difference quantity of water ka hoga .. .
3.4*15%=x*85%
x=.6kg means total quantity of dry fruit

3. Navyaaaa

ty az 10

1. Banya

corrected ty ..

4. rs

Q2 4x______x ?

5. jaga

q2 samjha do koi

thank u…

1. Shubhra

In 3.4 kg of cherries, water is 85%, so pulp is 15% = 15% of 3.4 = 0.51 kg
Let total of x kg dried cherries is to be obtained from 3.4 kg of fresh cherries.
So in this x kg dried cherries, 85% should be pulp to have 15% water. So
85% of x = 0.51 kg
Solve, x = 0.6 kg

1. jaga

thank u mam

6. aspirant

Q9. 5C1*8C4+8C5=5*70+56=406
Q10.12C2/52C2=66/1326=11/221

1. Banya

updated 🙂

1. aspirant

🙂