# “20-20” Quantitative Aptitude | Crack SBI Clerk Prelims 2018 Day-124

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โ20-20โ Aptitude Questions | Crack SBI Clerk Prelims 2018 Day-124

maximum of 20 points

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

1. 2, 4, 12, 48, 240, ?
1. 820
2. 960
3. 1052
4. 1440
5. 1278
1. 19, 22, 28, ? , 49, 64
1. 37
2. 33
3. 35
4. 39
5. 41
1. 64, 25, 216, 49, 512, ?
1. 729
2. 81
3. 100
4. 1331
5. 144
1. 139968, 23328, 3888, 648, ? , 18
1. 158
2. 178
3. 108
4. 148
5. 138ย
1. 210, 156, 110, 72, ? , 20
1. 56
2. 42
3. 38
4. 64
5. 36ย

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

1. 1035รท[(3/4) of (71+65)-15 3/4]=?
1. 12
2. 26
3. 24
4. 18
5. None of these
1. 7 ยพ – 3 ยฝ + 4 ยผ – 3 3/8 = ?
1. 5 ยฝ
2. 6 3/8
3. 5 1/8
4. 5 ยพ
5. None of these
1. (1080 รท 15) + (925 รท 25) + (1944 รท 27) =?
1. 156
2. 143
3. 215
4. 181
5. None of these
1. (7 ร 7)3 รท (49 ร 7)3 ร (2401)2 = 7?
1. 7
2. 5
3. 6
4. 8
5. None of these
1. 172 ร (853 โ 340) รท 19 = ? โ 720
1. 4576
2. 6128
3. 5364
4. 3780
5. None of these
1. The average salary of A, B and C is Rs. 33000 per month and that of B, C and D is Rs. 28000 per month. If the salary of A is twice that of D, then find the total salary of B and C?
1. Rs. 57000
2. Rs. 69000
3. Rs. 64000
4. Rs. 53000
5. None of these
1. A boat covers a distance of 150 km downstream 5 hours while it takes 10 hours to cover the same distance upstream. What is the speed of the boat in km per hour?
1. 22.5 km/hr
2. 18.5 km/hr
3. 20 km/hr
4. 24 km/hr
5. None of these
1. In a school, there are 1500 students in which 30% are girls while the percentage of students who passed the final examination is 75% and among the passed students 40% are girls then find the boys students who did not pass the examination?
1. 240
2. 315
3. 270
4. 375
5. None of these
1. Prathyekshan invested 40 % more than Praveen. Praveen invested 25% less than Ram. If the total sum of their investment is Rs. 67200. How much amount did Ram invest?
1. Rs. 28000
2. Rs. 32000
3. Rs. 24000
4. Rs. 30000
5. None of these
1. Abirami got married 5 years ago. Today her age is 1(1/5) times of that at the time of her marriage. At present, her daughterโs age is one eighth of her age, after 2 years. What will be her daughterโs age after 3 years?
1. 8 years
2. 7 years
3. 10 years
4. 9 years
5. None of these

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

Following table shows the total number of wood door manufactured and sold of different companies in different years.

 ย 2015 2016 2017 ย Manufactured sold Manufactured sold Manufactured sold A 3500 2700 4200 3800 2800 2500 B 3300 3050 4600 4350 3200 3000 C 4100 3800 4900 4650 3500 3250 D 4500 4200 3700 3500 3900 3650 E 3800 3600 3500 3100 4300 4100 F 4300 4150 4800 4200 4500 4350

ย

1. Total number of wood door manufactured by the company A, C and E together in the year 2015 is approximately what percentage of total number of wood door manufactured by the company B, D and F together in the year 2016?
1. 87 %
2. 75 %
3. 105 %
4. 80 %
5. 115 %
1. Find the average number of wood door sold in the year 2017 of all the given companies together?
1. 2840
2. 3125
3. 2560
4. 3475
5. None of these
1. Find the difference between the total number of wood door sold by the company A, B and C together in the year 2015 to that of the total number of wood door sold by the company D, E and F together in the year 2016?
1. 1850
2. 1600
3. 1250
4. 1400
5. None of these
1. Find the ratio between the total number of wood door manufactured in the year 2016 to that of the year 2017 of all the given companies together?
1. 156 : 185
2. 257 : 222
3. 312 : 271
4. 448 : 419
5. None of these
1. Find the percentage of wood door sold by the company F in the year 2016?
1. 78 %
2. 93 %
3. 87.5 %
4. 73.5 %
5. None of these

The pattern is, *2, *3, *4, *5, *6

The difference is, 3, 6, 9, 12, 15….

The pattern is, 43, 52, 63, 72, 83, 92,..

The pattern is, รท 6

The pattern is, 152 โ 15, 132 โ 13, 112 โ 11, 92 โ 9, 72 -7, 52 โ 5,..

Direction (6-10)

1035 รท [(3/4)*136 โ 63/4] = x

X = 1035 รท [102 โ (63/4)]

X = 1035 รท [(408 โ 63)/4]

X = 1035 รท (345/4)

X = 1035 *4/345

X = 12

(7-3+4-3)(3/4-1/2+1/4-3/8) = x

5 (1/8) = x

X = 5 (1/8)

X = (1080/15) + (925/25) + (1944/27)

X = 72 + 37 + 72

X = 181

(7 ร 7)3 รท (49 ร 7)3 ร (2401)2 = 7x

76 รท 79 ร 78 = 7x

76 โ 9 + 8 = 7x

75 = 7x

X = 5

172*(513/19) = x โ 720

4644 + 720 = x

X = 5364

The average monthly salary of A, B, C = 33000

Total monthly salary of A, B and C = 33000*3 = 99000

The average monthly salary of B, C, D = 28000

Total monthly salary of B, C and D = 28000*3 = 84000

A โ D = 99000 โ 84000

A โ D = 15000

A = 2D

2D โ D = 15000

D = Rs. 15000

The monthly salary of A = 2*15000 = Rs. 30000

Total salary of B and C = 99000 โ 30000 = Rs. 69000

Speed of the downstream= 150/5 = 30 km/hr

Speed of the upstream= 150/10 = 15 km/hr

Speed of boat in still water = (1/2) [Speed of downstream + Speed of upstream]

= > ยฝ [30 + 15] = 45/2

= > 22.5 km/hr

Number of students who passed the examination from the school

= 75*1500/100

= 1125

Number of boys in the school

= 1500*70/100

= 1050

Number of boys who passed the examination

= 1125*60/100

=675

Number of boys who did not pass the examination

= 1050 – 675

= 375

The investment of Prathyekshan and Praveen = 140: 100 = 7: 5

The investment of Praveen and Ram = 75: 100 = 3: 4

The investment of Prathyekshan, Praveen and Ram

= > 21: 15: 20

56โs = 67200

1โs = 1200

Ramโs investment = 20โs = Rs. 24000

Today her age = (6/5)* Age, at the time of her marriage

Today her age : Age, at the time of her marriage = 6 : 5

5 years ago, she got married.

1โs = 5

Present age of Abirami = 30 years

Daughterโs present age = (32/8) = 4 years

Daughterโs age after 3 years = 7 years

Direction (16-20)

Total number of wood door manufactured by the company A, C and E together in the year 2015

= > 3500 + 4100 + 3800 = 11400

Total number of wood door manufactured by the company B, D and F together in the year 2016

= > 4600 + 3700 + 4800 = 13100

Required % = (11400/13100)*100 = 87 %

The total number of wood door sold in the year 2017 of all the given companies together

= > 2500 + 3000 + 3250 + 3650 + 4100 + 4350 = 20850

Required average = 20850/6 = 3475

The total number of wood door sold by the company A, B and C together in the year 2015

= > 2700 +3050 + 3800 = 9550

The total number of wood door sold by the company D, E and F together in the year 2016

= > 3500 + 3100 + 4200 = 10800

Required difference = 10800 โ 9550 = 1250

The total number of wood door manufactured in the year 2016 of all the given companies together

= > 4200 + 4600 + 4900 + 3700 + 3500 + 4800 = 25700

The total number of wood door manufactured in the year 2017 of all the given companies together

= > 2800 + 3200 + 3500 + 3900 + 4300 + 4500 = 22200

Required ratio = 25700: 22200 = 257: 222