6500+ Quantitative Aptitude Questions and Answers With Explanation

Q:

Simple interest on a certain sum is 16/25 of the sum. Find the rate percent and time, If both are numerically equal.

A) Rate = 7% and Time = 7 years.	B) Rate = 8% and Time = 8 years.
C) Rate = 6% and Time = 6 years.	D) Rate = 5% and Time = 5 years.

Answer & Explanation Answer: B) Rate = 8% and Time = 8 years.

Explanation:

Let sum = X. Then S.I = 16x/25

Let rate = R% and Time = R years.

Therefore, (x * R * R)/100 = 16x/25 => R = 40/5 = 8

Therefore, Rate = 8% and Time = 8 years.

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Filed Under: Simple Interest
Exam Prep: GRE

112 41778

Q:

If the average of 31, x, 42, 39, 56, 78, 83 and 91 is 58.5, then what is the value of x?

A) 26	B) 34
C) 58	D) 48

Answer & Explanation Answer: D) 48

Explanation:

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Filed Under: Average
Exam Prep: Bank Exams

8 41769

Q:

Read the data given and answer the following questions

In a class of 60 students:

42 like Maths,

32 like English,

12 like neither Maths nor English

How many students like exactly one subject?

A) 16	B) 12
C) 6	D) 22

Answer & Explanation Answer: D) 22

Explanation:

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Filed Under: Percentage
Exam Prep: Bank Exams

0 41664

Q:

A sum was put at simple interest at a certain rate for 3 years. Had it been put at 2% higher rate, it would have fetched Rs 360 more. Find the sum.

A) Rs.4000	B) Rs.9000
C) Rs.5000	D) Rs.6000

Answer & Explanation Answer: D) Rs.6000

Explanation:

Let sum = P and original rate = R. Then

[(P * (R+2) * 3)/100] - [ (P * R * 3)/100] = 360

3P*(R+2) - 3PR = 36000

3PR + 6P - 3PR = 36000

6P = 36000

P = 6000

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

70 41632

Q:

Find the volume (in cm3) of a right circular cone of diameter 7 cm and height 7 cm.

A) 69.06	B) 16.43
C) 11.15	D) 89.83

Answer & Explanation Answer: D) 89.83

Explanation:

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Filed Under: Volume and Surface Area
Exam Prep: Bank Exams

0 41503

Q:

On 8th Feb, 2005 it was Tuesday. What was the day of the week on 8th Feb, 2004?

A) Tuesday	B) Saturday
C) Friday	D) Sunday

Answer & Explanation Answer: D) Sunday

Explanation:

The year 2004 is a leap year. It has 2 odd days.

The day on 8th Feb, 2004 is 2 days before the day on 8th Feb, 2005.

Hence, this day is Sunday

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Filed Under: Calendar

139 41439

Q:

A and B take part in 100 m race. A runs at 5 kmph. A gives B a start of 8 m and still beats him by 8 seconds. The speed of B is:

A) 5.15 kmph	B) 4.14 kmph
C) 4.25 kmph	D) 4.4 kmph

Answer & Explanation Answer: B) 4.14 kmph

Explanation:

A's speed = (5*5/15)m/sec = (25/18)m/sec

Time taken by A to cover 100 m = (100*18/15)sec = 72sec

Time taken by B to cover 92 m = (72 + 8) = 80 sec.

B's speed =(92/80*18/5)kmph =4.14kmph

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Filed Under: Races and Games

49 41399

Q:

If the area of a semi-circle is 1925 sq.cm, then find its radius (in cm).

A) 70	B) 31
C) 62	D) 35

Quantitative Aptitude - Arithmetic Ability Questions

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