6500+ Quantitative Aptitude Questions and Answers With Explanation

Q:

Solve the following:

22 - (1/4){-5 - (-48) $\div$ (-16)}

A) 0	B) 24
C) 22	D) 21

Answer & Explanation Answer: B) 24

Explanation:

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Filed Under: Simplification
Exam Prep: Bank Exams

1 72434

Q:

40% of 75 + 80% of 25 = K% of 250

Find the value of K?

A) 10	B) 20
C) 30	D) 35

Answer & Explanation Answer: B) 20

Explanation:

From the given data,

$\frac{40}{100} x 75 + \frac{80}{100} x 25 = \frac{K}{100} x 250 30 + 20 = \frac{5 K}{2} 50 x 2 = 5 K K = \frac{100}{5} = 20$

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Filed Under: Percentage
Exam Prep: AIEEE , Bank Exams , CAT
Job Role: Analyst , Bank Clerk , Bank PO

12 72344

Q:

If log 2 = 0.3010 and log 3 = 0.4771, the values of log₅ 512 is

A) 2.875	B) 3.875
C) 4.875	D) 5.875

Answer & Explanation Answer: B) 3.875

Explanation:

ANS: log₅512 = log512/log5 = $\frac{\log 2^{9}}{\log (10 / 2)}$ = $\frac{9 \log 2}{\log 10 - \log 2}$ = $\frac{9 * 0.3010}{1 - 0.3010}$ =2.709/0.699 =2709/699 =3.876

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Filed Under: Logarithms
Exam Prep: Bank Exams
Job Role: Bank PO

206 72131

Q:

The average of five consecutive odd numbers is 61. What is the difference between the highest and lowest numbers :

A) 4	B) 8
C) 12	D) 16

Answer & Explanation Answer: B) 8

Explanation:

Let the numbers be x, x + 2, x + 4, x + 6 and x + 8.

Then [x + (x + 2) + (x + 4) + (x + 6) + (x + 8) ] / 5 = 61.

or 5x + 20 = 305 or x = 57.

So, required difference = (57 + 8) - 57 = 8

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Filed Under: Average

235 71849

Q:

A man took loan from a bank at the rate of 12% p.a. simple interest. After 3 years he had to pay Rs. 5400 interest only for the period. The principal amount borrowed by him was:

A) Rs.2000	B) Rs.10000
C) Rs.15000	D) Rs.20000

Answer & Explanation Answer: C) Rs.15000

Explanation:

Principal = $R s (\frac{100 \times 5400}{12 \times 3}) = R s . 15000$

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Filed Under: Simple Interest
Exam Prep: Bank Exams
Job Role: Bank PO

172 70498

Q:

1.123 + 11.23 + 112.3 = ?

A) 123.453	B) 124.653
C) 125.253	D) 123.953

Answer & Explanation Answer: B) 124.653

Explanation:

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Filed Under: Simplification
Exam Prep: Bank Exams

7 70432

Q:

ΔXYZ is right angled at Y. If sinX = 12/13, then what is the value of cosecZ ?

A) 5/12	B) 5/13
C) 13/5	D) 13/12

Answer & Explanation Answer: C) 13/5

Explanation:

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Filed Under: Area
Exam Prep: Bank Exams

0 70230

Q:

If the cost price of 12 pens is equal to the selling price of 8 pens, the gain percent is ?

A) 12%	B) 30%
C) 50%	D) 60%

Answer & Explanation Answer: C) 50%

Explanation:

Friends, we know we will need gain amount to get gain percent, right. So lets get gain first.

Let the cost price of 1 pen is Re 1

Cost of 8 pens = Rs 8

Selling price of 8 pens = 12

Gain = 12 - 8 = 4

Gain% = $(\frac{g a i n}{\cos t} \times 100)$ % = $(\frac{4}{8} \times 100)$ % = 50%

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Filed Under: Profit and Loss

346 70143

Quantitative Aptitude - Arithmetic Ability Questions

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