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 Quantitative Aptitude - Arithmetic Ability Questions

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Q:

What is the value of (4a2 - 9b2 )/(2a + 3b) is

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

Explanation:
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Filed Under: Simplification
Exam Prep: AIEEE , Bank Exams , CAT

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Q:

The base of a parallelogram is twice its height. If the area of the parallelogram is 338 sq.cm. Find its height?

A) 13 cm B) 14 cm
C) 16 cm D) 12 cm
 
Answer & Explanation Answer: A) 13 cm

Explanation:
Let height =x Then, base =2x
2x * x = 338
=>x=13
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Filed Under: Area
Exam Prep: Bank Exams

0 1826
Q:

Excluding stoppages, the speed of a bus is 72 kmph and including stoppages, it is 60 kmph. For how many minutes does the bus stop per hour?

A) 12 B) 8
C) 15 D) 10
 
Answer & Explanation Answer: D) 10

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Filed Under: Time and Distance
Exam Prep: Bank Exams

4 1826
Q:

A train, 200 m long, is running at a speed of 54 km/hr. The time in seconds that will be taken by train to cross a 175 m long bridge is

A) 12.5 B) 20
C) 25 D) 10
 
Answer & Explanation Answer: C) 25

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Filed Under: Problems on Trains
Exam Prep: Bank Exams

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Q:

P and Q can do a project in 60 and 30 days respectively. In how many days can they complete 90% of the project if they work together?

A) 9 days B) 27 days
C) 36 days D) 18 days
 
Answer & Explanation Answer: D) 18 days

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Filed Under: Time and Work
Exam Prep: Bank Exams

1 1825
Q:

If ab+c=bc+a=Cb+athen which one of the following statements is correct?

A) Each fraction is equal to 1 or -1 B) Each fraction is equal to 1/2 or 1
C) Each fraction is equal to 1/2 or -1 D) Each fraction is equal to 1.2 only
 
Answer & Explanation Answer: C) Each fraction is equal to 1/2 or -1

Explanation:

a/(b+c) = b/(c+a) = c/(a+b)

Taking reciprocal and adding 1 to each ratio we get;

(b+c)/a + 1 = b/(c+a) + 1 = c/(a+b) + 1

Or (a+b+c)/a = (a+b+c)/b = (a+b+c)/c

So this can only be equal when a=b=c or a+b+c = 0

When a=b=c we get

a/(b+c)= ½When a+b+c = 0 we get

b+c = -a

So a/(b+c) = -1

So the ratios are ½ or -1

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Filed Under: Simplification
Exam Prep: Bank Exams

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Q:

Select the odd word/letters/number/number pair from the given alternatives.

A) 794 B) 576
C) 668 D) 992
 
Answer & Explanation Answer: B) 576

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Filed Under: Odd Man Out
Exam Prep: Bank Exams , CAT

0 1823
Q:

The marked price of an article is 10/7 of the cost price and the selling price of that article is 4/5 of the marked price. What is the profit percentage?

A) 17.24 B) 16.66
C) 14.28 D) 15.42
 
Answer & Explanation Answer: C) 14.28

Explanation:
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Filed Under: Profit and Loss
Exam Prep: Bank Exams , GATE
Job Role: Bank Clerk , Bank PO

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