6500+ Quantitative Aptitude Questions and Answers With Explanation

Q:

Find the time to double your investment at 6%

A) 10years	B) 11years
C) 12years	D) 13years

Answer & Explanation Answer: C) 12years

Explanation:

M=p(1+i)^n

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

1 3654

Q:

The B.D. and T.D. on a certain sum is Rs.200 and Rs.100 respectively. Find out the sum.

A) Rs. 400	B) Rs. 300
C) Rs. 100	D) Rs. 200

Answer & Explanation Answer: D) Rs. 200

Explanation:

$F = \frac{B D \times T D}{B D - T D} = \frac{200 \times 100}{200 - 100} = \frac{200 \times 100}{100} = R s . 200$

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Filed Under: Banker's Discount

1 3651

Q:

The periodic interest rate corresponding to: 9.75% compounded semiannually

A) 4.875	B) 3.785
C) 4.865	D) 4.975

Answer & Explanation Answer: A) 4.875

Explanation:

i=j/m

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

2 3650

Q:

16 of 225 is =

A) 7.11	B) 7.21
C) 6.87	D) 7.58

Answer & Explanation Answer: A) 7.11

Explanation:

16 of 225 is =

$16 = p \times \frac{225}{100} p = \frac{1600}{225} = 7.1111$

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

9 3642

Q:

A and B invest in a business in the ratio 4 : 5. After 10 months B leaves the business after withdrawing his investment. In the first year the business made a profit of Rs 49,000. What is B's share (in Rs) of this profit?

A) 25000	B) 20000
C) 18000	D) 22000

Answer & Explanation Answer: A) 25000

Explanation:

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Filed Under: Partnership
Exam Prep: Bank Exams

3 3639

Q:

How many 4-letter words with or without meaning, can be formed out of the letters of the word, 'LOGARITHMS', if repetition of letters is not allowed ?

A) 5040	B) 2525
C) 2052	D) 4521

Answer & Explanation Answer: A) 5040

Explanation:

The Word LOGARITHMS contains 10 letters.

To find how many 4 letter words we can form from that = ${}^{10}P_{4}$ =10x9x8x7 = 5040.

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Filed Under: Permutations and Combinations
Exam Prep: GRE , GATE , CAT , Bank Exams , AIEEE
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4 3637

Q:

In a rectangle, length is three times its breadth. If the length and the breadth of the rectangle are increased by 30% and 100% respectively, then its perimeter increases by

A) 40/3%	B) 20%
C) 25%	D) 27%

Answer & Explanation Answer: C) 25%

Explanation:

Let the breadth of the rectangle = x

Length of the the rectangle will be = 3 times of breadth = 3x

So the initial perimeter = 2(length + breadth) = 2(x + 3x) = 8x

New breadth after increase = x + 10x/100 = 1.1x

New length after increase = 3x + 30*3x/100 = 3.9x

New perimeter = 2(1.1x + 3.9x) = 10x

Percentage change in perimeter = ( 10x-8x)*100/8x = 25%

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Filed Under: Area
Exam Prep: Bank Exams

10 3635

Q:

Simplify $4 \frac{1}{3} + 2 \frac{1}{5} + 4 \frac{1}{4} = ?$

A) 10 47/60	B) 11 45/73
C) 11 47/36	D) 10 35/48

Answer & Explanation Answer: A) 10 47/60

Explanation:

The given equation is in Mixed fraction.

Now to solve this type of fractions,

$4 \frac{1}{3} + 2 \frac{1}{5} + 4 \frac{1}{4} = ? ? = (4 + 2 + 4) + (\frac{1}{3} + \frac{1}{5} + \frac{1}{4}) ? = 10 + \frac{47}{60} ? = 10 \frac{47}{60}$

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Filed Under: Simplification
Exam Prep: AIEEE , Bank Exams , CAT , GATE
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9 3634

Quantitative Aptitude - Arithmetic Ability Questions

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