# Mixed Quantitative Aptitude Questions Set 39

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. Mahesh is very expert in bargaining ,once he went to a shop. When he asked the price of tea packet , the shopkeeper told him the price by increasing 15% of the original cost. But he insisted to decrease the price by 15% so the shopkeeper sold it by decreasing the price by 15%. What is the loss or profit of shopkeeper and by how much percent?
A)Â 5.52% loss
B)Â 2.25% loss
C)2.25% profit
D) 3.5 profit
E) 1.55 profit
Â Â Option B
Solution:
Let the actual price be 100
100 â€¦.(+15%)â€¦â€¦115â€¦â€¦(-15%)â€¦.97.75
=100 â€“ 97.75 = 2.25% loss
2. Ram scores 80% marks in Physics and 66% marks in ChemistryÂ  and the maximum marks of both the papers are 100. What per cent does he score in Maths which is of 200 marks , if he scores 80% marks in all the three subjects?
A)Â 70%
B)Â 67%
C) 87%
D) 95%
E) 72%
Â Â Option C
Solution:
(80/100) + (66/100) + (x/200) = 320/400
=> x = 174
=87%
3. 16 workers working 6 hours a day can build a boundary of length 150 metres, breadth 20m and height 12 m in 25 days. In how many days 12 workers, working 8 hours a day can build a wall of length 800 m, breadth 15 m and height 6 m.
A)Â 20days
B)Â 30ays
C)40days
D) 55days
E) 50days
Â Â Option E
Solution:
Use this formula =( L1 B1 H1 )/(L2 B2 H2) = (M1 D1 T1)/(M2 D2 T2)
(150*20*12)/(800 *15* 6) = (16*6*25)/(12*8*D2)
=> D2 = 50 days
4. A rectangular lawn is 18m * 12 m . It has a gravel path 1.5 m wide all around it on the outside. What is the area of the path.
A)Â  70
B)Â 88
C) 75
D) 99
E) 95
Â Â Option D
Solution:
Area of the lawn = 18*12 = 216 m^2
Total area = (lawn + path) = 21*15 = 315 m^2
Area of path = 31-216 = 99 m^2
5. Amit covers a certain distance with his own speed , but when he reduces his speed by 10km/hr his time duration for the journey increases by 40 hours, while if he increases his speed by 5 km/hr from his original speed he takes 10 hours less than the original time taken . Find the distance covered by him.
A)Â 1500km
B)Â 2000km
C) 800km
D) 1100km
E) 1800km
Â Â Option A
Solution:
Let dist. be x km and speed be y km/h .
[x/(y-10)] â€“(x/y) = 40
=> x= 2y(y-10)——–(1)
and (x/y) â€“ x/(y+5) = 10
=> x= 2y(y+5)———(2)
On solving (1) and (2) , we get
y = 25km/hr and x = 1500 km/hr
6. Smallest side of a right angled triangle is 8 cm less than the side of a square of perimeter 56cm . Second largest side of the right angled triangle is 4cm less than the length of rectangle of area 96 cm^2 and breadth 8 cm. What is the largest side of the right angled triangle?
A)Â 8cm
B)Â 12cm
C)15cm
D) 10cm
E) 13cm
Â Â Option D
Solution:
side of a square = Perimeter /4 Â = 56/4 =14 cm
smallest side of the right angled triangle = 14-8 =6 cm
length of the rectangle= Area / breadth = 96/8 = 12cm
second side of the triangle= 12 â€“ 4 = 8cm
Hypotenuse of the right angled triangle = âˆš(6)^2+(8)^2 = 10cm
7. The age of Rama and Krishna are in the ratio of 7:10 resp. After 6 years the ratio of their age will be 17:23. What is the difference in their age?
A)Â 11 years
B)Â 10 years
C) 15 years
D) 12 years
E) 16 years
Â Â Option D
Solution:
After 6 years = (7x+6)/(10x+6) = 17/23
=> x =4
Required difference = 10x â€“ 7x = 3x = 3*4 = 12 years
8. A fast moving superfast express crosses another passenger train in 20 seconds . The speed of faster train is 72km/hr and speed of slower train is 27km/hr. Also the length of the faster train is 100m , then find the length of the slower train if they are moving in the same direction.
A)Â 115m
B)Â 90m
C)180m
D) 200m
E) 150m
Â Â Option E
Solution:
Time = sum of the length of the two trains / Difference in speeds
=> 20 = (100+x)/(25/2)
=> x = 150 m
9. In how many ways can a student choose a programme of 5courses, if 9 courses are available and 2 courses are compulsory for every student?
A)Â 25
B)Â 35
C) 20
D) 42
E) 37
Â Â Option B
Solution:
Required ways = 7C3 = 35 ways
10. A brother and sister appear for an interview against two vacant posts in an office. The probability of the brotherâ€™s selection is (1/5) and that of the sisterâ€™s selection is (1/3). What is the probability that one of them is selected?
A)Â 2/7
B)Â 1/2
C) 2/5
D) 3/7
E) 2/9
Â Â Option C
Solution:
One of them is selected either brother or sister.
Required probability = (1/5)*(2/3) + (4/5)*(1/3) = 2/5

## 14 Thoughts to “Mixed Quantitative Aptitude Questions Set 39”

1. priyanka porwal

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2. hi

Tq AZ

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1. Sachin shukla( Banker 2018)

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4. Sachin shukla( Banker 2018)

ty))

5. Shubham Gupta

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1. EKTA

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6. Purvi !!

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