# “20-20” Quantitative Aptitude | Crack SBI Clerk / IDBI Executive 2018 Day-67

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โ20-20โ Aptitude Questions | Crack SBI Clerk / IDBI Executive 2018 Day-67

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1. Priyanka bought a microwave oven and paid 10% less than its original price. She sold it at 30% profit on the price she paid. What percentage of profit did she earn?
1. 29
2. 18
3. 20
4. 27
5. 16
1. A started business with Rs 45000 and B joined him after certain number of months with a capital of Rs 30000. At the end of a year the profit is divided in the ratio of 2:1. When did B join?
1. 8
2. 3
3. 6
4. 1
5. 4
1. A, B and C started a business with their investments in the ratio 1: 2:4. After 6 month A invested the half amount more as before and B invested the same amount as before while C withdrew ยผ part of his investment. Find the ratio of their profits at the end of the year.
1. 5: 12: 13
2. 5: 11: 14
3. 5: 12: 14
4. 5: 12: 10
5. None of these
1. A and B together can do a work in 8 days, B and C can do together in 6 days while C and A together can do in 10 days. In how many days A alone will complete the work?
1. 28 ยผ days
2. 25 2/5 days
3. 34 2/7 days
4. 20 ยพ days
5. None of these
1. A committee of 5 members consisting of boys and girls is to be formed out of 6 girls and 8 boys. What is the probability that the number of boys in the committee will be less than the number of girls?
1. 194/5615
2. 340/1001
3. 176/3500
4. 183/1672
5. 129/2800

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

1. (27 ร 10-3)2 ร 81 รท (310 ร 10-3) = 10?
1. -5
2. -3
3. 3
4. 5
5. None of these
1. 729 % of 450 + 158 % of 175 = x + 192
1. 2854
2. 3542
3. 2678
4. 3196
5. None of these
1. (7/4) of? – (3/7) of (28/15) of 2800 = 58 % of 700
1. 1512
2. 1785
3. 2197
4. 1986
5. None of these
1. โx + 18 = (2837 + 788) รท 145
1. 64
2. 25
3. 49
4. 36
5. None of these

1. 782 โ 5372 รท 68 =? ร 52
1. 312.4
2. 240.2
3. 295.6
4. 345.8
5. None of these

Directions (Q. 11 โ 15): What value should come in place of question mark (?) in the following number series?

1. 128, 146, 168, 198, 252, ?
1. 356
2. 478
3. 379
4. 402
5. 512
1. 64, 379, 1889, 7549, ?
1. 15236
2. 22639
3. 18457
4. 29842
5. 17548
1. 54, 72, 94, 132, 206, ?
1. 344
2. 312
3. 376
4. 408
5. 424
1. 101, 109, 282, 1062, ?
1. 3568
2. 5174
3. 4760
4. 6782
5. 3950
1. 720, 120, 24, ? , 2
1. 8
2. 6
3. 4
4. 12
5. 14

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

Following table shows the total no of students appeared for the certain examination from different schools.

 School Total no of students appeared Appeared boys : girls Pass % No of boys passed P 1200 2 : 3 65 % 320 Q 1500 1 : 1 72 % 460 R 1800 5 : 4 78 % 510 S 2100 1 : 2 86 % 642 T 2700 4 : 5 91 % 1136

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1. Find the total no of girls passed from all schools together?
1. 4459
2. 3697
3. 4983
4. 5115
5. None of these
1. Find the total no of students failed from the schools R, S and T?
1. 847
2. 1025
3. 1241
4. 933
5. None of these
1. Total no of girls appeared from School Q and S together is what percentage more/less than the total no of boys appeared from School R and T together?
1. 27 % more
2. 56 % less
3. 27 % less
4. 56 % more
5. None of these
1. Find the ratio between the total no of boys appeared from School P, Q and R together to that of total no of girls appeared from School R, S and T together?
1. 303 : 412
2. 223 : 370
3. 145 : 298
4. 297 : 395
5. None of these
1. Find the approximate percentage of girls passed from School T?
1. 88 %
2. 75 %
3. 91 %
4. 64 %
5. None of these

ย

Explanation:ย ย ย ย ย

Let the original price be Rs. 100

Money paid by Priyanka = 100*90/100= Rs. 90

Priyanka sold at = 90*130/100= Rs. 117

Profit earned= 117 โ 90 = Rs. 27

Profit percentage = 27*100/100 = 27 %

Explanation:

Let the number of months for which B was in the business x

So,

45000*12/30000*x= 2/1

540000/30000x= 2/1

540000= 60000x

x= 540000/60000

x=9 months

So, Number of months after B joined = 3 months

Explanation:

The share of A, B and C = [1*6 + (3/2)*6] : [2*6 + 4*6] : [4*6 + 3*6]

= > 15 : 36 : 42

= > 5 : 12 : 14

Explanation:

Total units of work= 120

A+B one day work= 15 units

B+C one day work= 20 units

C+ A one day work= 12 units

2(A+B+C) = 47 units

(A+B+C)= 47/2units

Aโs one day work= (47/2) – 20= 7/2 units

Time required by A alone= 120/(7/2) = 34 2/7 days

Explanation:

Required probability

= 6C4 * 8C1/ 14C5 + 6C3* 8C2/14C5

= 120/2002 + (20*28)/ 2002

= 120/2002 + 560/2002

= 680/2002 = 340/1001

Directions (Q. 6 โ 10):

Explanation:

(33 ร 33 ร 10-6 ร 81) / (310 ร 10-3) = 10x

(33 ร 33 ร 10-6 ร 34) / (310 ร 10-3) = 10x

10-6 + 3 = 10x

X = -3

Explanation:

(729/100)*450 + (158/100)*175 = x + 361

3280.5 + 276.5 โ 361 = x

X = 3196

Explanation:

7x/4 – (3/7) * (28/15) * 2800 = (58/100)* 700

7x/4 – 2240 = 406

7x/4 = 406 + 2240

7x/4 = 2646

X = 2646*(4/7) = 1512

Explanation:

โx + 18 = (2837 + 788) /145

โx + 18 = 3625/145

โx + 18 = 25

โx = 25 โ 18 = 7

X = 72 = 49

Explanation:

6084 โ (5372/68) = 25x

6084 โ 79 = 25x

6005 = 25x

X = 6005/25 = 240.2

Directions (Q. 11 โ 15):

Explanation:

The difference of difference is *2, *3, *4,..

Explanation:

The pattern is, *6 โ 5, *5 โ 6, *4 โ 7, *3 โ 8

Explanation:

The difference of difference is, 22, 42, 62, 82,..

Explanation:

The pattern is, *1 + 23, *2 + 43, *3 + 63, *4 + 83,..

Explanation:

The pattern is, รท 6, รท 5, รท 4, รท 3,..

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Directions (Q. 16 โ 20)

Explanation:

 School Total no of students appeared Appeared boys & girls Passed students No of boys passed No of girls passed P 1200 480, 720 780 320 460 Q 1500 750, 750 1080 460 620 R 1800 1000, 800 1404 510 894 S 2100 700, 1400 1806 642 1164 T 2700 1200, 1500 2457 1136 1321

ย

Required Answer = (460 + 620 + 894 + 1164 + 1321)

= > 4459

Explanation:

Total no of students failed from the schools R, S and T,

= > 1800*(22/100) + 2100*(14/100) + 2700*(9/100)

= > 396 + 294 + 243

= > 933

Explanation:

Total no of girls appeared from School Q and S together,

= > 750 + 1400 = 2150

Total no of boys appeared from School R and T together,

= > 1000 + 1200 = 2200

Required % = [(2200 โ 2150)/2200]*100

= > (50*100)/2200

= > 2.27 % less

Explanation:

The total no of boys appeared from School P, Q and R together,

= > 480 + 750 + 1000 = 2230

The total no of girls appeared from School R, S and T together,

= > 800 + 1400 + 1500 = 3700

Required ratio = 2030: 3700

= > 223: 370

Explanation:

Total no of appeared students = 2700

9โs = 2700

1โs = 300

Total no of girls appeared for examination from School T is,

= > 5โs = 1500

Total no of passed students from School T is,

= > 1321

Required % = (1321/1500)*100 = 88.06 % = 88 %

Daily Practice Test Schedule | Good Luck

 Topic Daily Publishing Time Daily News Papers & Editorials 8.00 AM Current Affairs Quiz 9.00 AM Logical Reasoning 10.00 AM Quantitative Aptitude โ20-20โ 11.00 AM Vocabulary (Based on The Hindu) 12.00 PM Static GK Quiz 1.00 PM English Language โ20-20โ 2.00 PM Banking Awareness Quiz 3.00 PM Reasoning Puzzles & Seating 4.00 PM Daily Current Affairs Updates 5.00 PM Data Interpretation / Application Sums (Topic Wise) 6.00 PM Reasoning Ability โ20-20โ 7.00 PM English Language (New Pattern Questions) 8.00 PM General / Financial Awareness Quiz 9.00 PMย