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

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

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Q:

Both S.I. and C.I. is calculated with a similar rate of 10% per annum on a sum of rupees. If C.I. is calculated yearly for two years, then for what period must S.I. be evaluated such that S.I. = C.I.?

A) 4.2 years B) 2.1 years
C) 1.1 years D) 1.4 years
 
Answer & Explanation Answer: B) 2.1 years

Explanation:

Let time period of S.I. be T years.

Then for a principal amount, say P,

ATQ, as, S.I. = C.I. for rate =10%p.a. and

time for C.I. = 2(P x 10 x T)/100 = P{[ (100+10)/100 ]2-1}T/10 = [ 110/100 ]2–1 = [(11/10)2–1] = (121-100)/100T/10 = 21/100T = 21/10 = 2.1 years

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Filed Under: Simple Interest
Exam Prep: Bank Exams
Job Role: Bank PO , Bank Clerk

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Q:

In a circle, a diameter AB and a chord PQ (which is not a diameter) intersect each other at X perpendicularly. If AX : BX = 3 : 2 and the radius of the circle is 5 cm, then the length of chord PQ is

A) 2√13 cm B) 5√3 cm
C) 4√6 cm D) 6√5 cm
 
Answer & Explanation Answer: C) 4√6 cm

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Filed Under: Area
Exam Prep: Bank Exams

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Q:

Two successive discounts of 10% and 20% are equivalent to a single discount of

A) 28% B) 27%
C) 25% D) 30%
 
Answer & Explanation Answer: A) 28%

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Filed Under: Percentage
Exam Prep: Bank Exams

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Q:

In an examination, 35% of total students failed in Hindi, 45% failed in English and 20% failed in both. Find the percentage of those studnets who passed in both the subjects ?

A) 45% B) 35%
C) 20% D) 40%
 
Answer & Explanation Answer: D) 40%

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Filed Under: Percentage
Exam Prep: Bank Exams

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Q:

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

√(3099.985 ÷ 62.001 + 14.001) = ?

A) 8 B) 13
C) 18 D) 23
 
Answer & Explanation Answer: A) 8

Explanation:

Ans. 
√(3100 ÷ 62 + 14) = ?
√(50 + 14) = ?
√64 = ?
? = 8

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

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Q:

The sum of a fraction and 3 times its reciprocal is 19/4. What is the fraction?

A) 3/4 B) 4/3
C) 5/4 D) 4/5
 
Answer & Explanation Answer: A) 3/4

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Filed Under: Problems on Numbers
Exam Prep: Bank Exams

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Q:

Sashi can do a piece of work in 20 days. Tanya is 25% more efficient than Sashi. The number of days taken by Tanya to do the same piece of work is:

A) 15 B) 16
C) 18 D) 25
 
Answer & Explanation Answer: B) 16

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

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