6500+ Quantitative Aptitude Questions and Answers With Explanation

Q:

A sapphire ring with a marked price of $1800 is offered to the purchaser on the following terms: $200 deposit and the balance to be paid over 24 equal monthly instalments with interest charged at 11.5% p.a. flat rate. Find the monthly repayments

A) $53	B) $42
C) $62	D) $82

Answer & Explanation Answer: D) $82

Explanation:

Total repayment amount = $1600 + $368
= $1968
= $82

regular payment= total amount/number of repayments

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

1 4229

Q:

Read the following information and answer the questions given below:

A has 28 elements, B has 32 elements and A U B has 40 elements.

How many elements does A $\cap$ B have?

A) 12	B) 8
C) 10	D) 20

Answer & Explanation Answer: D) 20

Explanation:

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Filed Under: Quantitative Aptitude - Arithmetic Ability

0 4227

Q:

Population of a colony of mosquitoes is increasing by 20% per day. If the population on Monday was 3000, on which day of that week the population would be 5184 ?

A) Thursday	B) Friday
C) Tuesday	D) Monday

Answer & Explanation Answer: A) Thursday

Explanation:

Given monday population = 3000
Per day 20% increase in population.

Tuesday population = 3000 + 3000x20/100 = 3000 + 600 = 3600

Wednesday population =3600 + 3600x20/100 = 3600 + 720 = 4320

Thursday population = 4320 + 4320x20/100 = 4320 + 864 = 5184

So that day is Thursday.

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

3 4222

Q:

60 percent of 2/7 of three-fourth of a number is 2664. What is the number ?

A) 20720	B) 21352
C) 25421	D) 24150

Answer & Explanation Answer: A) 20720

Explanation:

Let N be the required number.

=> $\frac{60}{100} x \frac{2}{7} x \frac{3}{4} x N = 2664$

=> N = 2664x2x7x5/9

=> N = 20720.

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

10 4220

Q:

How long will it take $3000 to earn $60 interest at 6%?

A) 2months	B) 3months
C) 4months	D) 5months

Answer & Explanation Answer: C) 4months

Explanation:

t=I/pr

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

3 4219

Q:

Evaluate : $\frac{3 . 39^{2} - 2 . 61^{2}}{3.39 - 2.69}$ ?

A) 3	B) 4
C) 6	D) 1

Answer & Explanation Answer: C) 6

Explanation:

It is in the form of $\frac{a^{2} - b^{2}}{a - b} = \frac{(a + b) (a - b)}{a - b} = a + b$

Here a = 3.39 b = 2.61

= 3.39 + 2.61 = 6.

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Filed Under: Decimal Fractions
Exam Prep: GRE , GATE , CAT , Bank Exams , AIEEE
Job Role: Bank PO , Bank Clerk

6 4218

Q:

A large cube is formed from the material obtained by melting three smaller cubes of 3,4 and 5 cm side. What is the ratio of the total surface areas of the smaller cubes and the large cube?

A) 2 : 1	B) 3 : 2
C) 25 : 18	D) 27 : 20

Answer & Explanation Answer: C) 25 : 18

Explanation:

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Filed Under: Volume and Surface Area

1 4217

Q:

If $19 x^{2} = 100^{2} - 90^{2}$ , then find the value of x.

A) 10	B) 9
C) 11	D) 12

Quantitative Aptitude - Arithmetic Ability Questions

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