“20-20” Quantitative Aptitude | Crack IBPS RRB Assistant Prelims 2018 Day-143

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“20-20” Aptitude Questions | Crack IBPS RRB Assistant Prelims 2018 Day-143

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

  1. 2184, 2913, 3156, 3237, 3264,?
  1. 3298
  2. 3286
  3. 3273
  4. 3314
  5. 3325
  1. 36, 17, 16, 23, 45, ?
  1. 111.5
  2. 132.25
  3. 124.75
  4. 128.5
  5. 136.25
  1. 38, 40, 78, 236, 942, ?
  1. 2198
  2. 2786
  3. 3354
  4. 4712
  5. 4250
  1. 5, 1, 19, 51, 291, ?
  1. 1325
  2. 1697
  3. 1433
  4. 1521
  5. 1789 
  1. 36, 18, 27, 67.5, ?
  1. 212.5
  2. 245
  3. 287.25
  4. 226
  5. 236.25

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

  1. (3/5) of (12/17) of 14025 – ? + 48 % of 650 = 58
  1. 6194
  2. 5428
  3. 5282
  4. 5816
  5. 6070 
  1. 85184 – √961 ÷? + (2/5) of 375 – 48 = 22
  1. 8
  2. 7
  3. 5
  4. 4
  5. 6 
  1. 6 5/8 % of 9600 + (1425 ÷ 25 ÷ 3] = 127 +?
  1. 576
  2. 528
  3. 534
  4. 552
  5. 590
  1. 2717 ÷ (22 % of 650) = 35 × 5 3/7 of (17 ÷ x)
  1. 150
  2. 180
  3. 170
  4. 210
  5. None of these 
  1. 56 % of 4250 + 36 % of 750 + 23 % of ? = 2788
  1. 600
  2. 450
  3. 500
  4. 750
  5. None of these 
  1. 20% of the voters did not cast their vote in an election between two candidates. 10% of the votes polled were found invalid. The successful candidate got 56% of the valid votes and won by a majority of 1728 votes. The number of voters enrolled on the voters list was?
  1. 24000
  2. 22000
  3. 18000
  4. 20000
  5. None of these
  1. If the difference between the simple interest and Compound interest on a certain sum for 2 years at 8 % is Rs. 160. Find the sum?
  1. Rs. 25000
  2. Rs. 28000
  3. Rs. 32000
  4. Rs. 36000
  5. None of these 
  1. 6 years ago, the ratio of ages of A and B is 2: 3. After 6 years, the ratio of ages of A and B is 3: 4. Find the sum of the present ages of A and B?
  1. 64 years
  2. 72 years
  3. 68 years
  4. 66 years
  5. None of these 
  1. Two trains cross each other. The length of each train is 150 meter. When they cross each other in same direction they take 54 seconds while in opposite direction they cross each in 12 seconds. Then find the speed of the two trains in km/hr?
  1. 25 km/hr, 40 km/hr
  2. 30 km/hr, 45 km/hr
  3. 40 km/hr, 50 km/hr
  4. 55 km/hr, 35 km/hr
  5. None of these
  1. A boat can cover 48 km upstream in 72 minutes. If the speed of the current is 2/7th of the boat in still water, then how much distance (in km) can the boat cover downstream in 90 minutes?
  1. 135 km
  2. 142 km
  3. 108 km
  4. 124 km
  5. None of these 

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

Following table shows the total number of people visits 5 different places in a week and the ratio of male and female also given.

Places Total people Male : Female
Taj Mahal 21915 5 : 4
India Gate 23650 5 : 6
Golden Temple 25800 7 : 8
Gateway of India 20170 3 : 2
Red Fort 24768 4 : 5

 

  1. 16. Total number of male who are all visiting the places India Gate and Red Fort together is approximately what percentage of total number of female who are all visiting the places Taj Mahal and Gateway of India together?
  1. 120 %
  2. 140 %
  3. 90 %
  4. 100 %
  5. 75 % 
  1. If 34 % of total number of people visiting Golden Temple are from Tamilnadu and 22 % are from Karnataka and 15 % are from Kerala and the remaining people are from Andhra Pradesh, then find the total number of Andhra Pradesh people who are all visiting Golden Temple?
  1. 6874
  2. 7056
  3. 7482
  4. 7258
  5. None of these 
  1. Find the average number of females who are all visiting India Gate, Red Fort and Gateway of India together?
  1. 13852
  2. 11576
  3. 12780
  4. 12454
  5. None of these 
  1. Find the difference between the total number of people who are all visiting Golden Temple and Red Fort together to that of total number of males who are all visiting India Gate and Gateway of India?
  1. 28218
  2. 26542
  3. 25380
  4. 27716
  5. None of these 
  1. Find the ratio between the total number of males who are all visiting Red Fort to that of total number of females who are all visiting Taj Mahal?
  1. 2752 : 2435
  2. 1750 : 1891
  3. 256 : 185
  4. 58 : 24
  5. None of these

 Answers:

1). Answer: c

The difference is, ÷ 3

The answer is, 3273

2). Answer: a

The pattern is, *0.5 – 1, *1 -1, *1.5 -1, *2 -1, *2.5 -1,..

The answer is, 111.5

3). Answer: d

The pattern is, *1 + 2, *2 – 2, *3 + 2, *4 – 2, *5 +2,..

The answer is, 4712

4). Answer: b

The pattern is, *2 – 32, *3 + 42, *4 – 52, *5 + 62, *6 – 72,..

The answer is, 1697

5). Answer: e

The pattern is, *1/2, *3/2, *5/2, *7/2,..

The answer is, 236.25

Direction (6-10)

6). Answer: a

(3/5) * (12/17) * 14025 – x + (48/100)*650 = 58

5940 – x + 312 = 58

6194 = x

7). Answer: d

44 – (31/x) + (2/5)*375 – 48 = 22

44 – (31/x) + 150 – 48 = 22

44 + 150 – 48 – 22 = (31/x)

124 = (31/x)

X = 124/31 = 4

8). Answer: b

(53/800)*9600 + ((1425/25)/3) = 127 + x

636 + 19 – 127 = x

X = 528

9). Answer: c

2717 ÷ [(22/100) * 650] = 35 × 5 3/7 of (17 ÷ x)

2717 ÷ 143 = 35 * (38/7)*(17/x)

19 = 35 * (38/7)*(17/x)

X = 35*(38/7)*(17)*(1/19)

X = 170

10). Answer: a

(56/100)*4250 + (36/100)*750 + (23/100)*x = 2788

2380 + 270 + (23/100)*x = 2788

(23/100)*x = 2788 – 2380 – 270

(23/100)*x = 138

X = 138*(100/23)

X = 600

11). Answer: d

The successful candidate got 56% of the valid votes and won by a majority of 1728 votes.

(56 % – 44 %) of votes = 1728

12 % of votes = 1728

According to the question,

20 % voters didn’t cast their votes and 10 % of the votes are invalid. So,

= > (80/100)*(90/100)* total voters = 1728*(100/12)

= > Total voters = (1728*10*10*100) / (8*9*12) = 20000

12). Answer: a

Diff = Sum*(r/100)2

160 = Sum*(8/100)2

160*100*100/64 = Sum

Sum = Rs. 25000

13). Answer: b

6 years ago, the ratio of ages of A and B = 2: 3 (2x, 3x)

Present ages of A and B = 2x + 6, 3x + 6

After 6 years, the ratio of ages of A and B = 3: 4

According to the question,

(2x + 12)/(3x + 12) = (3/4)

8x + 48 = 9x + 36

X = 12

Sum of the present ages of A and B = 2x + 3x + 12 = 72 years

14). Answer: d

Let the speed of two trains be X and Y

Same direction,

54 = (150+150)/[(X – Y)*5/18]

54 = (300*18)/[(X – Y)*5]

X – Y = 20 —> (1)

Opposite direction

12 = (150+150)/[(X + Y)*5/18]

12 = (300*18)/[(X + Y)*5]

X + Y = 90 —> (2)

By solving the equation (1) and (2), we get,

Y= 35 km/hr, X= 55km/hr

15). Answer: c

Speed of upstream = (48*60) / 72 = 40 km/hr

Speed of current: Speed of still water = 2: 7

Speed of upstream = Speed of still water – speed of Current

40 = 5x => x =8

Speed of current = 16 km/hr

Speed of still water = 56 km/hr

Speed of downstream= Speed of still water + speed of Current

= > 56 + 16 = 72 km/hr

Speed = 72 km/hr, Time = 90 minutes

Distance = 72*(90/60) = 108 km

Direction (16-20)

16). Answer: a

Total number of male who are all visiting the places India Gate and Red Fort together

= > 23650*(5/11) + 24768*(4/9)

= > 10750 + 11008 = 21758

Total number of female who are all visiting the places Taj Mahal and Gateway of India together

= > 21915*(4/9) + 20170*(2/5)

= > 9740 + 8068 = 17808

Required % = (21758/17808)*100 = 122 % = 120 %

17). Answer: c

The total number of Andhra Pradesh people who are all visiting Golden Temple

= > 25800*(29/100) = 7482

18). Answer: b

The total number of females who are all visiting India Gate, Red Fort and Gateway of India together

= > 23650*(6/11) + 24768*(5/9) + 20170*(2/5)

= > 12900 + 13760 + 8068

= > 34728

Required average = 34728/3 = 11576

19). Answer: d

The total number of people who are all visiting Golden Temple and Red Fort together

= > 25800 + 24768 = 50568

The total number of males who are all visiting India Gate and Gateway of India

= > 23650*(5/11) + 20170*(3/5)

= > 10750 + 12102 = 22852

Required difference = 50568 – 22852 = 27716

20). Answer: a

 The total number of males who are all visiting Red Fort

= > 24768*(4/9) = 11008

The total number of females who are all visiting Taj Mahal

= > 21915*(4/9) = 9740

Required ratio = 11008: 9740 = 2752: 2435

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