6500+ Quantitative Aptitude Questions and Answers With Explanation

Q:

1/(tanA + cotA) is equal to

A) (cosecA + sinA)(secA - cosA)	B) √[(cosecA - sinA)(secA - cosA)]
C) √[(cosecA + sinA)(secA - cosA)]	D) (cosecA - sinA)(secA - cosA)

Answer & Explanation Answer: D) (cosecA - sinA)(secA - cosA)

Explanation:

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Filed Under: Simplification
Exam Prep: Bank Exams

0 2208

Q:

A, B and C start a business and the ratio of their investment is 8 : 5 : 3. If at the end the ratio of their profits is 4 : 15 : 6, then what is the ratio of time period of their investment?

A) 1 : 6 : 5	B) 2 : 3 : 4
C) 1 : 6 : 4	D) 2 : 6 : 3

Answer & Explanation Answer: C) 1 : 6 : 4

Explanation:

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Filed Under: Ratios and Proportions
Exam Prep: Bank Exams

0 2208

Q:

20% discount is offered on an item. By applying a promo code the customer wins 5% cash back. What is the effective discount?

A) 24 percent	B) 25.2 percent
C) 25 percent	D) 6 percent

Answer & Explanation Answer: A) 24 percent

Explanation:

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Filed Under: Percentage
Exam Prep: Bank Exams

2 2207

Q:

Chutki can bake 30 cakes in 15 hours. Chutki and Badki together can bake 90 cakes in 30 hours. How many cakes Badki can bake in 10 hours?

A) 75	B) 20
C) 10	D) 60

Answer & Explanation Answer: C) 10

Explanation:

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Filed Under: Time and Work
Exam Prep: Bank Exams , CAT

3 2207

Q:

What is the average of first 39 even numbers ?

A) 39	B) 40
C) 20	D) 68

Answer & Explanation Answer: B) 40

Explanation:

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Filed Under: Average
Exam Prep: Bank Exams

8 2206

Q:

3/8 as a decimal

A) 1.375	B) 2.375
C) 0.375	D) 3.75

Answer & Explanation Answer: C) 0.375

Explanation:

Expressing 3/8 as a decimal fraction:

We can convert 3/8 into a decimal fraction by just dividing 3 by 8 or making 3 into 8 parts.

Then, it is 3/8 = 0.375 as a decimal fraction.

Other Method::

3/8 as a Decimal :

In this we should convert the denominator into 10, 100, 1000, 10000, 100000,... to make it simple.

Now to make 8 into 1000, we multiply numerator and denominator with 125

=> ( $\frac{3 x 125}{8 x 125} = \frac{375}{1000} = 0.375$

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Filed Under: Decimal Fractions
Exam Prep: AIEEE , Bank Exams , CAT , GATE , GRE
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3 2206

Q:

A man buys a table and a chair for Rs. 500. He sells the table at a loss of 10% and the chair at a gain of 10%. He still gains Rs.10 on the whole. The cost price of chair in rupees is

A) Rs.200	B) Rs.250
C) Rs.300	D) Rs.400

Answer & Explanation Answer: C) Rs.300

Explanation:

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Filed Under: Percentage
Exam Prep: Bank Exams

8 2205

Q:

The minimum value of LCM of given numbers is ........... the product of all the given numbers.

A) always greater than	B) always less than
C) always equal to	D) None

Quantitative Aptitude - Arithmetic Ability Questions

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