6500+ Quantitative Aptitude Questions and Answers With Explanation

Q:

If Aug 15th,2012 falls on Thursday then June 11th,2013 falls on which day ?

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

Answer & Explanation Answer: A) Wednesday

Explanation:

First,we count the number of odd days for the left over days in the given period.

Here,given period is 15.8.2012 to 11.6.2013

Aug Sept Oct Nov Dec Jan Feb Mar Apr May Jun

16 30 31 30 31 31 28 31 30 31 11(left days)

2 + 2 + 3 + 2 + 3 + 3 + 0 + 3 + 2 + 3 + 4 (odd days) = 6 odd days

So,given day Thursday + 6 = Wednesday is the required result.

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Filed Under: Calendar

173 22995

Q:

A rectangular lawn 55m by 35m has two roads each 4m wide running in the middle of it. One parallel to the length and the other parallel to breadth. The cost of graveling the roads at 75 paise per sq meter is

A) rs.58	B) rs.158
C) rs.258	D) rs.358

Answer & Explanation Answer: C) rs.258

Explanation:

area of cross roads = (55 x 4) + (35 x 4)- (4 x 4) = 344sq m

cost of graveling = 344 x (75/100) = Rs. 258

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Filed Under: Area
Exam Prep: Bank Exams
Job Role: Bank PO

30 22919

Q:

The average age of a class is 15.8 years. The average age of the boys in the class is 16.4 years and that of the girls is 15.4 years. What is the ratio of boys to girls in the class ?

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

Answer & Explanation Answer: B) 2:3

Explanation:

Let number of boys = x , Let number of girls = y
Total numbers of students = x + y
(x + y) × 15.8 = 16.4x + 15.4y
0.6x = 0.4y
x/y = 0.4/0.6 = 2/3

Ratio of boys and girls in the class is 2:3

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Filed Under: Problems on Ages
Exam Prep: GRE , GATE , CAT , Bank Exams , AIEEE
Job Role: Bank PO , Bank Clerk

35 22915

Q:

A motorist travels to a place 150 km away at an average speed of 50 km/hr and returns at 30 km/hr. His average speed for the whole journey in km/hr is :

A) 35	B) 36
C) 37.5	D) 38.2

Answer & Explanation Answer: C) 37.5

Explanation:

Average speed = (2xy) /(x + y) km/hr

= (2 * 50 * 30) / (50 + 30) km/hr.

37.5 km/hr.

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Filed Under: Average

17 22914

Q:

Which of the following statement is CORRECT about the tangents?

A) The tangents drawn at the end of diameter of a circle are parallel to each other.	B) The line segment which joins the point of contact of two parallel tangents to the circle is the diameter of the circle.
C) Tangents drawn from the external points subtends equal angle at the center.	D) All option are correct.

Answer & Explanation Answer: D) All option are correct.

Explanation:

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

1 22895

Q:

How many litres of pure acid are there in 8 litres of a 20% solution ?

A) 1.4	B) 1.5
C) 1.6	D) 1.7

Answer & Explanation Answer: C) 1.6

Explanation:

Quantity of pure acid = 20% of 8 litres = ((20/100)*8) litres = 1.6 litres.

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Filed Under: Percentage

38 22869

Q:

A can do a certain work in the same time in which B and C together can do it.If A and B together could do it in 20 days and C alone in 60 days ,then B alone could do it in:

A) 20days	B) 40 days
C) 50 days	D) 60 days

Answer & Explanation Answer: D) 60 days

Explanation:

(A+B)'s 1 day's work=1/20

C's 1 day work=1/60

(A+B+C)'s 1 day's work= 1/20 + 1/60 = 1/15

Also A's 1 day's work =(B+C)'s 1 day's work

Therefore, we get: 2 x (A's 1 day 's work)=1/15

=>A's 1 day's work=1/30

Therefore, B's 1 day's work= 1/20 - 1/30 = 1/60

So, B alone could do the work in 60 days.

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Filed Under: Time and Work

88 22817

Q:

Calculate the value of angle FED from the figure shown below.

A) 30 deg	B) 40 deg
C) 60 deg	D) 80 deg

Quantitative Aptitude - Arithmetic Ability Questions

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