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 Quantitative Aptitude - Arithmetic Ability Questions

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Q:

If a sum of money deposited in a bank at simple interest is doubled in 6 years, then after 12 years, the amount will be

A) 5/2times the original amount B) 3times the original amount
C) 7/2times the original amount D) 4times the original amount
 
Answer & Explanation Answer: B) 3times the original amount

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Filed Under: Simplification
Exam Prep: Bank Exams

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Q:

The difference between simple and compound interests compounded annually on a certain sum of money for 2 years at 18% per annum is Rs 81. The sum is ____.

A) Rs 2500 B) Rs 5000
C) Rs 10000 D) Rs 7500
 
Answer & Explanation Answer: A) Rs 2500

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Filed Under: Compound Interest
Exam Prep: Bank Exams

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Q:

If the ratio of marked price and selling price is 11 : 10, then what is the discount percentage?

A) 11.11 B) 17.28
C) 12.5 D) 9.09
 
Answer & Explanation Answer: D) 9.09

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Filed Under: Percentage

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Q:

ax + 3y = 6 has slope -2/3. What is the value of a?

A) -2 B) 2
C) 3 D) -3
 
Answer & Explanation Answer: B) 2

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Filed Under: Simplification
Exam Prep: Bank Exams

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Q:

If tanA -­ tanB = X, then the value of X is

A) (tanA + tanB)/(1 -­ tanAtanB) B) (tanA + tanB)/(1 + tanAtanB)
C) (tanA -­ tanB)/(1-­ tanAtanB) D) (tanA -­ tanB)/(1 + tanAtanB)
 
Answer & Explanation Answer: D) (tanA -­ tanB)/(1 + tanAtanB)

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Filed Under: Simplification
Exam Prep: Bank Exams

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Q:

If Rajan purchase 21 pens for Rs 20 and sell all the pens at the rate of 20 pens for Rs 21, then what will be the profit percentage?

A) 12.5 B) 13.33
C) 10.25 D) 16.66
 
Answer & Explanation Answer: C) 10.25

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Filed Under: Profit and Loss
Exam Prep: Bank Exams

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Q:

1/3 part of a certain journey is covered with the speed of 25 km/hr, 1/2 part of the journey is covered with the speed of 45 km/hr and the remaining part covered with the speed of 37.5 km/hr. What is the average speed (in km/hr) for the whole journey?

 

A) 37.08 B) 34.61
C) 43 D) 56
 
Answer & Explanation Answer: B) 34.61

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Filed Under: Time and Distance
Exam Prep: Bank Exams

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Q:

A solid sphere of radius 6 cm is melted and re-casted into a hollow cylinder of uniform thickness. If the external radius of the base of the cylinder is 5 cm and its height is 32 cm, find the uniform thickness of the cylinder ?

A) 3 cm B) 1.5 cm
C) 1 cm D) 2.5 cm
 
Answer & Explanation Answer: C) 1 cm

Explanation:

Let, inner radius of cylinder be ‘x’ cm.
4/3 π(6)3 = π × 32 (52 − x2)

or, (4 × 6 × 6 × 6) / (3 × 32) = 25 − x2 or, x2 = 25 − 9
or, x = 4 cm
Hence, thickness = 5 – 4 = 1 cm.

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Filed Under: Quantitative Aptitude - Arithmetic Ability
Exam Prep: Bank Exams , GATE

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