6500+ Quantitative Aptitude Questions and Answers With Explanation

Q:

On 17th March, 1997 Monday falls. What day of the week was it on 17th March, 1996?

A) Monday	B) Tuesday
C) Saturday	D) Wednesday

Answer & Explanation Answer: C) Saturday

Explanation:

The year 1996 is a leap year. So, it has 2 odd days. So, the day on 17th March, 1997 will be 2 days beyond the day on 17th March,1996.

Here 17th March, 1997 is Monday. So, 17th March, 1996 is Saturday.

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Filed Under: Calendar

50 14603

Q:

Which of the following numbers is irrational?

A) 643	B) √64
C) 646	D) 644

Answer & Explanation Answer: D) 644

Explanation:

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Filed Under: Problems on Numbers
Exam Prep: Bank Exams

3 14591

Q:

In a factory there are three types of Machines M1 , M2 and M3 which produces 25%, 35% and 40% of the total products respectively. M1, M2 and M3 produces 2% , 4% and 5% defective products, respectively. What is the percentage of non-defective products?

A) 89%	B) 97.1%
C) 96.1%	D) 86.1%

Answer & Explanation Answer: C) 96.1%

Explanation:

Non- defective products

$\frac{25 x 0.98 + 35 x 0.96 + 40 x 0.95}{100} x 100 = 96.1$

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

22 14575

Q:

What is the third proportional to 16 and 36 ?

Answer

Let $\inline 6:8::15:x$

$\inline 16x=36\times 36$

$\therefore x=\frac{36\times 36}{16}=81$

Workspace

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Subject: Ratios and Proportions

73 14566

Q:

What is the ratio whose terms differ by 40 and the measure of which is 2/7 ?

A) 16:56	B) 14:56
C) 15:56	D) 16:72

Answer & Explanation Answer: A) 16:56

Explanation:

Let the ratio be x : (x + 40), then ,

$\frac{x}{x + 40} = \frac{2}{7}$

$\Rightarrow$ 7x = 2x + 80

$\Rightarrow$ x = 16

Required ratio = 16 : 56

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Filed Under: Ratios and Proportions

35 14565

Q:

If x : y = 1 : 3, then what will be the ratio of $(3 y^{2} + 3 x^{2}) : (2 y^{2} - 8 x^{2})$ ?

A) 4 : 1	B) 2 : 1
C) 3 : 1	D) 5 : 1

Answer & Explanation Answer: C) 3 : 1

Explanation:

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Filed Under: Ratios and Proportions
Exam Prep: Bank Exams

1 14537

Q:

The ratio of students in a coaching preparing for B.tech and MBA is 4 : 5. The ratio of fees collected from each of B.tech and MBA students is 25 : 16. If the total amount collected from all the students is 1.62 lakh, what is the total amount collected from omly MBA aspirants?

A) Rs. 62,000	B) Rs. 72,000
C) Rs. 82,000	D) None of these

Answer & Explanation Answer: B) Rs. 72,000

Explanation:

The ratio of fees collected from B.Tech : MBA = 4x * 25y : 5x * 16y

= 100xy : 80xy

= 5xy : 4 xy = 5k : 4k

The amount collected only from MBA students = $\frac{4}{9} \times 1.62 l a k h$ = Rs. 72,000

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Filed Under: Ratios and Proportions

18 14514

Q:

Kaushalya can do a work in 20 days, while kaikeyi can do the same work in 25 days. They started the work jointly.Few days later Sumitra also joined them and thus all of them completed the whole work in 10 days. All of them were paid total Rs.700. What is the Share of Sumitra?

A) Rs.130	B) Rs.185
C) Rs.70	D) can't be determined

Answer & Explanation Answer: C) Rs.70

Explanation:

Efficiency of kaushalya = 5%

Efficiency of kaikeyi = 4%

Thus, in 10 days working together they will complete only 90% of the work.

[(5+4)*10] =90

Hence, the remaining work will surely done by sumitra, which is 10%.

Thus, sumitra will get 10% of Rs. 700, which is Rs.70

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Filed Under: Time and Work

12 14507

Quantitative Aptitude - Arithmetic Ability Questions

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