6500+ Quantitative Aptitude Questions and Answers With Explanation

Q:

If cos 240° = x, then value of x is

A) -1/√2	B) -√3/2
C) 1/2	D) -1/2

Answer & Explanation Answer: D) -1/2

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Filed Under: Simplification
Exam Prep: Bank Exams

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Q:

A's salary was decreased by 50% and subsequently increased by 50%. How much percent does he lose?

A) 25%	B) 50%
C) 75%	D) No loss

Answer & Explanation Answer: A) 25%

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Filed Under: Percentage
Exam Prep: Bank Exams

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Q:

If sinC + sinD =X, then the value of X is?

A) 2cos[(C+D)/2]sin[(C-D)/2]	B) 2sin[(C+D)/2]cos[(C-D)/2]
C) 2cos[(C+D)/2]cos[(C-D)/2]	D) 2sin[(C+D)/2]sin[(D-C)/2]

Answer & Explanation Answer: B) 2sin[(C+D)/2]cos[(C-D)/2]

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Filed Under: Simplification
Exam Prep: AIEEE , Bank Exams , CAT

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Q:

Raghavendra sells a machine for Rs 43 lakhs at a loss. Had he sold it for Rs 52 lakh, his gain would have been 5 times the former loss. Find the cost price of the machine.

A) Rs 50.5 lakhs	B) Rs 60.6 lakhs
C) Rs 44.5 lakhs	D) Rs 38.5 lakhs

Answer & Explanation Answer: C) Rs 44.5 lakhs

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Filed Under: Profit and Loss
Exam Prep: Bank Exams

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Q:

Deepti bought a set of cups for Rs. 175, but then had to sell it later to clear old stocks for Rs. 161. What is the percentage of loss that she had to incur?

A) 16	B) 8
C) 7	D) 14

Answer & Explanation Answer: B) 8

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Filed Under: Profit and Loss
Exam Prep: Bank Exams

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Q:

Six years ago, the ratio of the two persons P and Q was 3 : 2. Four years hence the ratio of their ages will be 8 : 7. What is P's age?

A) 10 years	B) 12 years
C) 14 years	D) 8 years

Answer & Explanation Answer: B) 12 years

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Filed Under: Problems on Ages
Exam Prep: Bank Exams

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Q:

A train 100 m long is running at a speed of 120 kms/hr. The time taken to pass a person standing near the line is

A) 1 second	B) 3 seconds
C) 5 seconds	D) 7 seconds

Answer & Explanation Answer: B) 3 seconds

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Filed Under: Problems on Trains
Exam Prep: Bank Exams

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Q:

If ${(x + \frac{1}{x})}^{2} = 3$ , then the value of $x^{3} + \frac{1}{x^{3}}$ is:

A) 0	B) 1
C) 2	D) -1

Quantitative Aptitude - Arithmetic Ability Questions

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