Quantitative Aptitude - Arithmetic Ability Questions

Q:

An amount fetched a total simple interest of Rs. 3200 at the rate of 6.25 %/yr in 4 years. What is the amount (in Rs)?

A) 13800 B) 11800
C) 12800 D) 14800
 
Answer & Explanation Answer: C) 12800

Explanation:
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Filed Under: Simple Interest
Exam Prep: Bank Exams

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Q:

If a--b = 4 and ab = 45, find the value of a3 - b3

A) 604 B) 370
C) 253 D) 199
 
Answer & Explanation Answer: A) 604

Explanation:

(a  b)2 = a2 + b2 -2ab  16 = a2 + b2  90  a2 + b2 = 106 a3  b3 = (a  b) (a2 + b2 + ab)  a3  b3 = 4 X (106 + 45)  a3  b3 = 4 X 151  a3  b3 = 604

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Filed Under: Simplification
Exam Prep: Bank Exams

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Q:

A student has to secure 35% marks to pass in a subject. If he gets 82 and fails by 23 marks. What is the maximum marks of the subject?

A) 300 B) 250
C) 350 D) 400
 
Answer & Explanation Answer: A) 300

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Filed Under: Percentage
Exam Prep: Bank Exams

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Q:

Which one is the largest among the fractions (5/113), (7/120), (13/145) and (17/160)?

A) 5/113 B) 7/120
C) 13/145 D) 17/160
 
Answer & Explanation Answer: D) 17/160

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Filed Under: Numbers
Exam Prep: Bank Exams

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Q:

Deepak sells all his goods available in his shop at the cost price, but he cheats his customer and gives 20% less goods as he should give. Find his % profit.

A) 30% B) 33%
C) 25% D) 20%
 
Answer & Explanation Answer: C) 25%

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Filed Under: Profit and Loss
Exam Prep: Bank Exams

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Q:

By what fraction selling price (S.P.) must be multiplied to get the cost price (C.P.) if the loss is 20% ?

A) 4/5 B) 8/5
C) 5/4 D) 6/5
 
Answer & Explanation Answer: C) 5/4

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Filed Under: Profit and Loss
Exam Prep: Bank Exams

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Q:

What should come in place of question mark (?) in the following question? (You do not have to calculate the exact value.)

(√80.997 - √25.001) × (√120.98 + √16.02) = ?

A) 20 B) 30
C) 40 D) 50
 
Answer & Explanation Answer:

Explanation:

Ans. 
Approximating the values:
(√81 - √25) × (√121 + √16) = ?
(9 - 5) × (11 + 4) = ?
4 × 15 = ?
? = 60

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Filed Under: Simplification
Exam Prep: AIEEE , Bank Exams , GATE

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Q:

If sin θ + sin 5θ = sin 3θ and 0 < θ < (π/2), then what is the value of θ (in degrees)?

A) 30 B) 45
C) 60 D) 75
 
Answer & Explanation Answer: A) 30

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Filed Under: Simplification
Exam Prep: Bank Exams

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