6500+ Quantitative Aptitude Questions and Answers With Explanation

Q:

There were 35 studentsina hostel.Ifthenumber of studentsbe increased by 7, the expenditure on food increases by Rs 42 per day while the average expenditure of studentsis reduced by Rs 1. What was the initial expenditure on food per day?

A) Rs 432	B) Rs 442
C) Rs 420	D) Rs 400

Answer & Explanation Answer: C) Rs 420

Explanation:

Let the original avg expenditure be x

Total expenditure = 35x

⇒35x + 42 = (x-1) X 42

⇒35x + 42 = 42x –42

⇒7x = 84

⇒x = 12

So, initial expenditure = 12 X 35 = 420

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Filed Under: Average
Exam Prep: Bank Exams

2 2259

Q:

What is the least number of complete years in which a sum of money put out at 40% annual compound interest will be more than trebled?

A) 3	B) 4
C) 5	D) 6

Answer & Explanation Answer: B) 4

Explanation:

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Filed Under: Compound Interest
Exam Prep: Bank Exams

6 2258

Q:

Sum of twice a fraction and its reciprocal is 17/6. What is the fraction?

A) 4/3	B) 5/4
C) 3/4	D) 4/5

Answer & Explanation Answer: C) 3/4

Explanation:

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Filed Under: Simplification
Exam Prep: Bank Exams

0 2257

Q:

What is the value of $\frac{1 + a}{a^{1 / 2} + a^{- 1 / 2}} - \frac{a^{1 / 2} + a^{- 1 / 2}}{1 + a} + a^{- 1 / 2}$ ?

A) √a	B) 1/√a
C) 0	D) √a+1

Answer & Explanation Answer: A) √a

Explanation:

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Filed Under: Simplification
Exam Prep: Bank Exams

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Q:

Rahul nd Raghav are 110 km apart from each other and they started horse-riding towards each other at same time at a speed of 20 kmph and 24 kmph. After how many hours of riding will they be a distance of 22 km?

A) 1 hour	B) 1 hour 30 min
C) 2 hours	D) 2 hours 30 min

Answer & Explanation Answer: C) 2 hours

Explanation:

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Filed Under: Time and Distance
Exam Prep: Bank Exams

10 2256

Q:

The third proportional of two numbers 7 and 21 is

A) 35	B) 63
C) 42	D) 21

Answer & Explanation Answer: B) 63

Explanation:

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Filed Under: Ratios and Proportions
Exam Prep: Bank Exams , CAT

0 2255

Q:

The area of a rectangle in 60 sq.cm and its perimeter is 34 cm, then the length of the diagonal is

A) 17 cm	B) 11 cm
C) 15 cm	D) 13 cm

Answer & Explanation Answer: D) 13 cm

Explanation:

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Filed Under: Area
Exam Prep: Bank Exams

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Q:

If 3A = 7B = 13C, then A : B : C is equal to

A) 21:39:91	B) 39:91:21
C) 13:7:3	D) 91:39:21

Quantitative Aptitude - Arithmetic Ability Questions

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