6500+ Quantitative Aptitude Questions and Answers With Explanation

Q:

A certain sum is invested for 2 years in scheme M at 20% p.a. compound interest (compounded annually), Same sum is also invested for the same period in scheme N at k% p.a. simple interest. The interest earned from scheme M is twice of that earned from scheme N. What is the value of k?

A) 7	B) 11
C) 9	D) 13

Answer & Explanation Answer: B) 11

Explanation:

Interest earned in scheme M =

$P [{(1 + \frac{20}{100})}^{2} - 1] = \frac{11 P}{25}$

Interest earned in scheme N =

$\frac{P x k x 2}{100} = \frac{P k}{50}$

Now, from the given data,

$\frac{11 P}{25} = 2 x \frac{P k}{50}$

k = 11

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Filed Under: Compound Interest
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20 3608

Q:

7, 16, 36, 78, 144, ?

which number come in place of question mark

A) 168	B) 196
C) 222	D) 256

Answer & Explanation Answer: C) 222

Explanation:

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

43 3606

Q:

A bike runs at the speed of 35 km/h when not serviced and runs at 55 km/h, when serviced. After servicing the bike covers a certain distance in 5 h. How much approximate time will the bike take to cover the same distance when not serviced?

A) 8 hrs	B) 7.5 hrs
C) 7 hrs	D) 6.5 hrs

Answer & Explanation Answer: A) 8 hrs

Explanation:

Given speed of the bike after servicing = 55 kmph

Time taken for travelling some distance at 55 kmph = 5 hrs

Then,

Distance = Speed x Time = 55 x 5 = 275 kms.

Now,

Speed of the bike before servicing = 35 kmph

Distance = 275 kms

Now, Time = Distance/Speed = 275/35 = 7.85 hrs =~ 8 hrs.

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Filed Under: Time and Distance
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9 3562

Q:

What are the 2 natural numbers, sum of whose squares is 52?

A) 2, 7	B) 3, 5
C) 4, 6	D) 5, 6

Answer & Explanation Answer: C) 4, 6

Explanation:

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Filed Under: Square Roots and Cube Roots
Exam Prep: Bank Exams

3 3555

Q:

How many 4-digit numbers can be formed from the digits 2, 3, 5, 6, 7 and 9, which are divisible by 5 and none of the digits is repeated?

A) 60	B) 48
C) 36	D) 20

Answer & Explanation Answer: A) 60

Explanation:

Here given the required digit number is 4 digit.

It must be divisible by 5. Hence, the unit's digit in the required 4 digit number must be 0 or 5. But here only 5 is available.

x x x 5

The remaining places can be filled by remaining digits as 5 x 4 x 3 ways.

Hence, number 4-digit numbers can be formed are 5 x 4 x 3 = 20 x 3 = 60.

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Filed Under: Permutations and Combinations
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2 3554

Q:

What is 6% of 3,50,000?

A) 19500	B) 21000
C) 23600	D) 24000

Answer & Explanation Answer: B) 21000

Explanation:

6% of 350000

$\frac{6}{100} x 3, 50, 000 = 6 x 3500 = 21, 000 .$

Hence, 6% of 3,50,000 = 21,000.

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Filed Under: Percentage
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4 3548

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 3545

Q:

What lump sum deposited today would allow payments of $2000/year for 7 years at 5% compounded annually?

A) 11572.71	B) 11876
C) 189756	D) 11576

Quantitative Aptitude - Arithmetic Ability Questions

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