“20-20” Quantitative Aptitude | Crack SBI Clerk / IDBI Executive 2018 Day-64

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“20-20” Aptitude Questions | Crack SBI Clerk / IDBI Executive 2018 Day-64

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Directions (Q. 1 – 5): What value should come in place of question mark (?) in the following number series?

  1. 72, 146, 296, 598, ?
  1. 1204
  2. 856
  3. 944
  4. 1128
  5. 1342
  1. 21, 22, 178, ? , 307780
  1. 1786
  2. 2142
  3. 3784
  4. 4809
  5. 5423
  1. 27, 54, 162, 648, ?
  1. 1786
  2. 2890
  3. 3240
  4. 2154
  5. 3278
  1. 137, 137, 142, 157, ? , 477
  1. 195
  2. 222
  3. 298
  4. 326
  5. 387
  1. 52, 53, 75.5, 157, 384.5, ?
  1. 945.5
  2. 857.5
  3. 1163.5
  4. 1287.5
  5. 1956.5

Directions (Q. 6 – 10): What approximate value should come in place of question mark (?) in the following questions?

  1. 799.99 ÷ 40.21 = ? – 365.50
  1. 230
  2. 390
  3. 180
  4. 315
  5. 270
  1. (4/7) of (8/17) of (31/65) of 325 =?
  1. 40
  2. 70
  3. 50
  4. 60
  5. 30
  1. 13.85 × 6.05 + (75.01)2 × 12.91 =?
  1. 65840
  2. 58920
  3. 46350
  4. 73210
  5. 39780
  1. 625.92 – 362.21 ÷ (9.77 % of 82) =?
  1. 460
  2. 350
  3. 580
  4. 620
  5. 390
  1. (14.02)2 – (13.05)2 + (4325.175 + 79.55) ÷? = 225
  1. 28
  2. 22
  3. 36
  4. 30
  5. 42

  1. Rajiv spends 40% of his monthly income on food and 25% on education for his children. Of the remaining salary, he spends 20% on entertainment and 15% for purchasing dresses. He is now left with Rs. 22,750. What is the monthly salary of Rajiv?
  1. 100000
  2. 95000
  3. 80000
  4. 75000
  5. 60000
  1. In a mixture of 84 litres, the ratio of milk to water is 7: 5. If this ratio is to be 7: 8, then what is the quantity of water needed to be added?
  1. 12 litres
  2. 16 litres
  3. 18 litres
  4. 21 litres
  5. 25 litres
  1. A, B and C started a business by investing Rs. 25000, Rs. 35000 and Rs. 45000 respectively. After 3 months, A invested Rs. 10000 more. Find the total profit, if the share B is Rs. 24500 at the end of one year?
  1. 65800
  2. 56420
  3. 78750
  4. 48900
  5. 86540
  1. A can complete 3/4 of the work in 12 days. While A and B together the complete the work in 12 days, find the time required by C who is twice efficient than B?
  1. 18 days
  2. 16 days
  3. 24 days
  4. 28 days
  5. 14 days
  1. The ratio of B’s age six years hence to C’s present age is 3:2. B is fifteen years younger than A. If at present A’s age is twice the age of C, then what was B’s age 4 years ago?
  1. 21 years
  2. 15 years
  3. 17 years
  4. 24 years
  5. 27 years

Directions (Q. 16 – 20) Study the following table carefully and answer the given questions:

Following table shows the percentage of marks taken by the students in different subjects in a certain examination.

   Subject

 

 

Student

 

Physics

(Out of 150)

 

Chemistry

(Out of 120)

 

Maths

(Out of 200)

 

Biology

(Out of 150)

 

English

(Out of 100)

 

Hindi

(Out of

75)

Ram78 %75 %98 %84 %81 %76 %
Akil62 %70 %89 %74 %79 %44 %
Ragu74 %55 %75 %82 %68 %72 %
Jeyashree90 %85 %94 %68 %70 %84 %
Bharathi88 %90 %78 %90 %67 %76 %

  1. Find the total marks scored by Ram?
  1. 667
  2. 628
  3. 553
  4. 592
  5. None of these
  1. Total marks scored by Akil in the subjects of maths and biology is approximately what percentage of total marks scored by Bharathi in the same subjects?
  1. 90 %
  2. 120 %
  3. 75 %
  4. 100 %
  5. 125 %
  1. Find the ratio of total marks scored by all the students in maths to that of Chemistry?
  1. 356 : 225
  2. 485 : 127
  3. 434 : 225
  4. 398 : 127
  5. None of these
  1. Which of the following student gets highest total marks?
  1. Akil
  2. Jeyashree
  3. Ragu
  4. Bharathi
  5. Ram
  1. Total marks scored by Akil in all the subject is approximately what percentage more/less than the total marks scored by Ragu in all the subject?
  1. 5 %
  2. 3 %
  3. 8 %
  4. 1 %
  5. None of these

Answers:

Directions (Q. 1 – 5):

  1. Answer a

The pattern is, *2 + 2, *2 + 4, *2 + 6, *2 + 8,..

The answer is, 1204

  1. Answer d

The pattern is, *13 + 1, *23 + 2, *33 + 3, *43 + 4…

The answer is, 4809

  1. Answer c

The pattern is, *2, *3, *4, *5,..

The answer is, 3240

  1. Answer b

The pattern is, +12 -1, +22 + 1, +42 – 1, +82 +1, +162 -1,..

The answer is, 222

  1. Answer c

The pattern is, *1 + 2, *1.5 -4, *2 + 6, *2.5 -8, *3 + 10,..

The answer is, 1163.5

Directions (Q. 6 – 10):

  1. Answer b

(800/40) = x – 366

20 = x – 366

X = 20 + 366 = 386

X = 390

  1. Answer a

(4/7)*(8/17)*(31/65)*325 = x

X = (4/8)*(8/16)*(32/65)*325

X = 40

  1. Answer d

14 × 6 + 752 × 13 = x

X = 84 + 73125

X = 73209

X = 73210

  1. Answer c

626 – 362 ÷ ((10/100)*82) = x

626 – 362 ÷ 8.2 = x

626 – (362/8) = x

X = 626 – 45 = 581

X = 580

  1. Answer b

(14)2 – (13)2 + (4325 + 80) ÷? = 225

196 – 169 + (4405/x) = 225

(4405/x) = 225 – 196 + 169

(4405/x) = 198

x = 4405/198

x = 4400/200

x = 22

 

  1. Answer a

Let Rajiv’s monthly salary be x,

According to the question,

X*(35/100)*(65/100) = 22750

X = 22750*(100/65)*(100/35)

X = 100000

  1. Answer d

Total Quantity = 84 litres

The ratio of milk to water= 7: 5

Milk= 49 litres, Water= 35 litres

According to the question,

49/(35+x) = 7/8

56 = 35+x

X= 21 litres

So 21 litres of water should be added.

  1. Answer c

The share of A, B and C = [(25000*3) + (35000*9)] : [35000*12] : [45000*12]

= > 390000: 420000: 540000

= > 13: 14: 18

14’s = 24500

1’s = 1750

Total profit = 45’s = 1750*45 = 78750

  1. Answer c

A’s whole work,

(3/4)*A’s work = 12

A’s work = 16 days

(A+ B)’s work = 12 days

B’s one day work = (1/12) – (1/16) = 1/48

B’s whole work = 48 days

(B : C)’s efficiency = 1 : 2

(B : C)’s day ratio = 2:1

So, 2’s = 48

1’s = 24

C’s whole work = 24 days

  1. Answer c

The ratio of B’s age six years hence to C’s present age is 3:2(3x, 2x)

Present ages of B to C = 3x-6, 2x

Present ages of A to C = 2 : 1(2x, x)

Present ages of A, B and C = 4x, 3x-6, 2x

B = A – 15

A – B = 15

4x – (3x-6) = 15

4x – 3x + 6 = 15

X = 9

B’s age 4 years ago = 3x – 6 – 4 = 27 – 10 = 17 years

 

Directions (Q. 16 – 20)

   Subject

 

 

Student

 

Physics

(Out of 150)

 

Chemistry

(Out of 120)

 

Maths

(Out of 200)

 

Biology

(Out of 150)

 

English

(Out of 100)

 

Hindi

(Out of

75)

Ram117901961268157
Akil93841781117933
Ragu111661501236854
Jeyashree1351021881027063
Bharathi1321081561356757

 

Answer a

Total marks scored by Ram = 117 + 90 + 196 + 126 + 81 + 57 = 667

  1. Answer d

Required % =[(178+111)/(156+135)] = (289/291)*100 = 99.31 = 100 %

  1. Answer c

Total marks scored by all the students in Maths,

= > 196 + 178 + 150 + 188 + 156 = 868

Total marks scored by all the students in Chemistry,

= > 90 + 84 + 66 + 102 + 108 = 450

Required ratio = 868: 450 = 434: 225

  1. Answer e

Ram = 661

Akil = 578

Ragu = 572

Jeyashree = 660

Bharathi = 655

Ram get a highest total marks.

  1. Answer d

Total marks scored by Akil in all the subject is,

= > 93 + 84 + 178 + 111 + 79 + 33 = 578

The total marks scored by Ragu in all the subject is,

= > 111 + 66 + 150 + 123 + 68 + 54= 572

Required % = [(578-572)/572]*100 = 1.048 % = 1 %

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