Quantitative Aptitude - Arithmetic Ability Questions

Q:

Makarand works 2 times as fast as Samarjit. If Samarjit can complete a job alone in 27 days, then in how many days can they together finish the job?

A) 6 days B) 7 days
C) 5 days D) 9 days
 
Answer & Explanation Answer: D) 9 days

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Filed Under: Time and Work
Exam Prep: Bank Exams

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Q:

Convert the 0.0068 in to vulgar fraction:

A) 7/1250 B) 17/2500
C) 17/5000 D) 7/1750
 
Answer & Explanation Answer: B) 17/2500

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Filed Under: Decimal Fractions
Exam Prep: Bank Exams

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Q:

What is the rate of interest (in %) if simple interest earned on a certain sum for the 3rd year is Rs 2,000 and compound interest earned in 2 years is Rs 4,160?

A) 8 B) 10
C) 12 D) 6
 
Answer & Explanation Answer: A) 8

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Filed Under: Compound Interest
Exam Prep: Bank Exams

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Q:

x and y are two numbers such that their mean proportion is 16 and third proportion is 128. What is the value of x and y?

A) 8 and 16 B) 16 and 32
C) 8 and 32 D) 16 and 16
 
Answer & Explanation Answer: C) 8 and 32

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Filed Under: Ratios and Proportions
Exam Prep: AIEEE , Bank Exams , CAT

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Q:

There is a 4% increase in volume when a liquid freezes to its solid state. The percentage decrease when solid melts to liquid again, is

A) 3 3/13% B) 4%
C) 4 1/13%  D) 3 11/13%
 
Answer & Explanation Answer: D) 3 11/13%

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Filed Under: Percentage
Exam Prep: Bank Exams

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Q:

Sum of cubes of first n even natural numbers.

Answer

Proof of Sum of cubes of first n even natural numbers ::


sum_of_cubes_of_first_n_even_natural_numbers1556603651.png image


 


Hence, in other words, the sum of the first n cubes is the square of the sum of the first n natural numbers.

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Subject: Simplification Exam Prep: AIEEE , Bank Exams , CAT , GATE
Job Role: Analyst , Bank Clerk , Bank PO

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Q:

If compound interest received on a certain amount in the 3rd year is Rs. 12,100, what will be the compound interest (in Rs) for the 4th year on the same amount if rate of interest is 9%?

A) 17080 B) 15669
C) 13189 D) 14376
 
Answer & Explanation Answer: C) 13189

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Filed Under: Compound Interest
Exam Prep: Bank Exams

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Q:

Rita buys 5 sarees at an average cost of Rs 2250. If she buys three more sarees at an average cost of Rs 2750, what will be the average (in Rs) of all the sarees she buys?

A) 2437.5 B) 2500
C) 2450 D) 2332.5
 
Answer & Explanation Answer: A) 2437.5

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Filed Under: Average
Exam Prep: Bank Exams

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