Quantitative Aptitude - Arithmetic Ability Questions

Q:

The length and breadth of a rectangle is in the ratio of 3 : 1. If its perimeter is 96 m, then what is the length of the rectangle?

A) 36m B) 24m
C) 12m D) 48m
 
Answer & Explanation Answer: A) 36m

Explanation:

Let the length of the rectangle be 3x and breadth be 1x
Given, perimeter = 96 m
2(l + b) = 96 (or) l + b = 48 (or) 3x + 1x = 48 (or) x = 12 m
Now, Length of the rectangle = 12 x 3 = 36 m

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

3 1911
Q:

If A is 40% more than B, then B is how much percent less than A?

A) 28.57 B) 40
C) 33.33 D) 66.66
 
Answer & Explanation Answer: A) 28.57

Explanation:
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Filed Under: Percentage
Exam Prep: Bank Exams

9 1911
Q:

Two trains are running in opposite directions with the same speed. If the length of each train is 486 metres and they cross each other in 27 seconds, then what is the speed (in km/hr) of each train?

A) 55 B) 56.4
C) 64.8 D) 73.2
 
Answer & Explanation Answer: C) 64.8

Explanation:
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Filed Under: Problems on Trains
Exam Prep: Bank Exams

0 1911
Q:

By selling an item for Rs. 696 Unnati incurred a loss of 13%. By how much should she have raised the price to gain a profit of 10%?

A) Rs. 160.08 B) Rs. 104
C) Rs. 84 D) Rs. 184
 
Answer & Explanation Answer: D) Rs. 184

Explanation:
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Filed Under: Profit and Loss
Exam Prep: Bank Exams

3 1910
Q:

In ΔABC, ∠B = 70° and ∠C = 60°. The internal bisectors of the two smallest angles of ΔABC meet at O. The angle so formed at O is

A) 125° B) 120°
C) 115° D) 110°
 
Answer & Explanation Answer: A) 125°

Explanation:
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0 1910
Q:

In a class, there were 9 boys and some girls. In a test the mean score obtained by the boys was 12 while that obtained by the girls was 14. If the overall average was 13.1, what was the total number of students in the calss?

A) 21 B) 20
C) 22 D) 19
 
Answer & Explanation Answer: B) 20

Explanation:
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Filed Under: Average
Exam Prep: Bank Exams

0 1910
Q:

A and B together do a job in 12 days and A could do the job in 20 days if he worked alone. How many days would B take to do the job if he worked alone?

A) 30 B) 25
C) 24 D) 15
 
Answer & Explanation Answer: A) 30

Explanation:
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Filed Under: Time and Work
Exam Prep: Bank Exams

1 1910
Q:

30% discount is offered on an item. By applying a promo code the customer wins 5% cash back. What is the effective discount?

A) 33.5 percent B) 35.175 percent
C) 35 percent D) 6.5 percent
 
Answer & Explanation Answer: A) 33.5 percent

Explanation:
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Filed Under: Percentage
Exam Prep: Bank Exams

1 1910