Quantitative Aptitude - Arithmetic Ability Questions

Q:

A wholesaler sells a watch to a retailer at a profit of 33% and the retailer sells it to a customer at a loss of 20%. If the customer pays Rs 2,181.2, what had it cost the wholesaler?

A) Rs 2050 B) Rs 2320
C) Rs 2712 D) Rs 1780
 
Answer & Explanation Answer: A) Rs 2050

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Filed Under: Profit and Loss
Exam Prep: Bank Exams

4 2033
Q:

When a number is increased by 20, it becomes 116% of itself. What is the number?

A) 100 B) 250
C) 125 D) 400
 
Answer & Explanation Answer: C) 125

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Filed Under: Problems on Numbers
Exam Prep: Bank Exams

0 2032
Q:

The product of the ages of Swati and Aparna is 120. If thrice the age of Aparna is more than Swati's age by 2 years, find the age of Swati.

A) 18 B) 20
C) 24 D) 16
 
Answer & Explanation Answer: A) 18

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Filed Under: Problems on Ages
Exam Prep: Bank Exams

3 2032
Q:

N is the smallest three digit prime number. When N is divided by 13, then what will be the remainder?

A) 8 B) 9
C) 7 D) 10
 
Answer & Explanation Answer: D) 10

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Filed Under: Simplification
Exam Prep: Bank Exams

0 2032
Q:

A tower stands on the top of a building which is 40 metres high. The angle of depression of a point situated on the ground from the top and bottom of the tower are found to be 60 and 45 deg respectively. What is the height (in metres) of tower?

A) 20√3 B) 30(√3 + 1)
C) 40(√3 – 1) D) 50(√3 – 1)
 
Answer & Explanation Answer: C) 40(√3 – 1)

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Filed Under: Simplification
Exam Prep: Bank Exams

0 2031
Q:

Two equal circles intersect such that each passes through the centre of the other. If the length of the common chord of the circles is 10√3 cm, then what is the diameter of the circle?

A) 10 cm B) 15 cm
C) 20 cm D) 30 cm
 
Answer & Explanation Answer: C) 20 cm

Explanation:

Let there be 2 circles with centre O1 and OAB is the common chord

Since both passes through the center of each other as shown in figure

So O1O is the radius of both

Let O1O = r = AO1= AO

AX = AB / 2 = 5√3 cm (since OX perpendicular to chord bisects it)

AOO1 forms an equilateral triangle with on side = radius = r

Sin 60 = √3/2 = AX / AO = 5√3/r

So r = 10 cm

So diameter = 20 cm

 

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Filed Under: Simplification
Exam Prep: Bank Exams

0 2031
Q:

Simple interest on a sum of Rs 1400 for 3 years and 4 months is Rs 700. What is the rate (in percentage) of interest per annum?

A) 17 B) 15
C) 18 D) 12
 
Answer & Explanation Answer: B) 15

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Filed Under: Simple Interest
Exam Prep: Bank Exams

3 2031
Q:

A sum fetched a total simple interest of Rs.5,400 at the rate of 12.5 %/yr in 4 years. What is the sum (in Rs)?

A) 11800 B) 12800
C) 9800 D) 10800
 
Answer & Explanation Answer: D) 10800

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Filed Under: Simple Interest
Exam Prep: Bank Exams

3 2029