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 Quantitative Aptitude - Arithmetic Ability Questions

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Q:

If the side of square is increased by 6%, then what will be the percentage increase in its area?

A) 3.2 B) 12.04
C) 12.12 D) 12.36
 
Answer & Explanation Answer: D) 12.36

Explanation:
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Filed Under: Percentage
Exam Prep: Bank Exams

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Q:

On retirement, a woman gets Rs. 1,45,440 of her provident fund which she invests in a scheme at 20% per annum. Her monthly income from this scheme will be

A) Rs. 2550 B) Rs. 2424
C) Rs. 2224 D) Rs. 2380
 
Answer & Explanation Answer: B) Rs. 2424

Explanation:

Now, the principal amount P = Rs. 1,45,440

Rate of interest R = 20%/annum

Now monthly income I = PTR/100 = 1,45,440 x 20 x 1/100 x 12

= 2908800/1200

= Rs. 2424.

 

Hence, her monthly income = Rs. 2424.

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Filed Under: Simple Interest
Exam Prep: AIEEE , Bank Exams , CAT , GATE
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Q:

A, B and C together can finish a task in 12 days. A is twice as productive as B and C alone can do the task in 36 days. In how many days can A and B do the task if C goes on leave?

A) 10 B) 20
C) 15 D) 18
 
Answer & Explanation Answer: D) 18

Explanation:
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Filed Under: Time and Work
Exam Prep: Bank Exams

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Q:

Aarav's birthday is on Sunday, 12th March . On what day of the week will be Madhup's Birthday in the same year if Madhup was born on 10th August?

A) Thursday B) Wednesday
C) Friday D) Saturday
 
Answer & Explanation Answer: A) Thursday

Explanation:
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Filed Under: Calendar
Exam Prep: Bank Exams

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Q:

A train left from station A for station B at 4 pm at an average speed of 80 kmph. At 8 pm, another train also had left from station A for station B on a parallel track at an average speed of 120 kmph. How far from A is another train expected to overtake the first train?

A) 900km B) 940km
C) 960km D) 980km
 
Answer & Explanation Answer: C) 960km

Explanation:

Ans. 
Distance covered by 1st train in 4 hours = 80*4 = 320 km
Relative speed of 2nd train = 120-80 = 40 km
It will overtake another train in 320/40 = 8 hours
Distance between overtake point and station A = 8*120 = 960 km

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Filed Under: Problems on Trains
Exam Prep: AIEEE , Bank Exams , GATE

1 3767
Q:

5 boys and 3 girls can together cultivate a 23 acre field in 4 days and 3 boys and 2 girls together can cultivate a 7 acre field in 2 days. How many girls will be needed together with 7 boys, if they cultivate 45 acres of field in 6 days?

A) 4 B) 3
C) 2 D) 1
 
Answer & Explanation Answer: C) 2

Explanation:

Let workdone 1 boy in 1 day be b

and that of 1 girl be g

From the given data,

4(5b + 3g) = 23

20b + 12g = 23 .......(a)

 

2(3b + 2g) = 7

6b + 4g = 7 ........(b)

 

Solving (a) & (b), we get

b = 1, g = 1/4

 

Let number og girls required be 'p'

6(7 x 1 + p x 1/4) = 45

=> p = 2.

 

Hence, number of girls required = 2

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Filed Under: Time and Work
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9 3765
Q:

The cash realised on selling a 14% stock at Rs. 106.25, brokerage being 14%, is :

A) RS.105.50 B) RS.106
C) RS.106.50 D) RS.113.75
 
Answer & Explanation Answer: B) RS.106

Explanation:

Cash realised = Rs. (106.25 - 0.25) = Rs. 106.

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Filed Under: Stocks and Shares

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Q:

Suresh starts working as a analyst on an annual salary of Rs. 160000. If he receives a 15% pay-rise each year, the number of years he has worked for the company, when his annual salary became Rs. 279841 is

A) 3.5 yrs B) 4 yrs
C) 4.5 yrs D) 5 yrs
 
Answer & Explanation Answer: B) 4 yrs

Explanation:

From the given data in the question,

279841 = 160000 x 1+15100t279841160000 = 115100t

t = 4 years.

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Filed Under: Percentage
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