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 Quantitative Aptitude - Arithmetic Ability Questions

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Q:

A car covers the first 30 km at a speed of 60 kmph and the next 20 km at 80 kmph. Find the average speed.

A) 65.67 kmph B) 65.33 kmph
C) 66.33 kmph D) 66.67 kmph
 
Answer & Explanation Answer: D) 66.67 kmph

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Filed Under: Time and Distance
Exam Prep: Bank Exams

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Q:

A can do a work in 16 days and B in 20 days. If they work on it together for 8 days, then what fraction of work is left?

A) 1/3 B) 1/6
C) 2/9 D) 1/10
 
Answer & Explanation Answer: D) 1/10

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Filed Under: Time and Work
Exam Prep: Bank Exams , CAT

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Q:

One diagonal of a rhombus is half the other. If the length of the side of the rhombus is 20 cm, what is the area of the rhombus?

A) 320 sq cm B) 160 sq cm
C) 240 sq cm D) 360 sq cm
 
Answer & Explanation Answer: A) 320 sq cm

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Filed Under: Average
Exam Prep: Bank Exams

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Q:

There were 24 studentsina class. One of them, who was 18 years old, left the class and his place was filled up by a new comer.Ifthe average of the class was thereby lowered by 1 month, the age of new comer is-

A) 14 years B) 15 years
C) 16 years D) 17years
 
Answer & Explanation Answer: C) 16 years

Explanation:

Let the age of new comer be x

Avg age decrease by 1/12 year ⇒24 X 1/12 = 18 –x

⇒x=16 years

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Filed Under: Problems on Ages
Exam Prep: Bank Exams

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Q:

If the loss of percent on article is 15%. Then the ratio of the cost price and sell price will be

A) 17:20 B) 20:17
C) 23:15 D) 15:23
 
Answer & Explanation Answer: B) 20:17

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Filed Under: Profit and Loss
Exam Prep: Bank Exams

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Q:

The sum of three consecutive natural numbers each divisible by 5, is 225. The largest among them is

A) 85 B) 75
C) 70 D) 80
 
Answer & Explanation Answer: D) 80

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Filed Under: Problems on Numbers
Exam Prep: Bank Exams

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Q:

Which of the following is correct?

A) (3x -­ 2y)2 = 9x2 -­ 12xy + 4y2 B) (3x -­ 2y)2 = 9x2 -­ 6xy + 4y2
C) (3x + 2y)2 = 9x2 -­ 12xy + 4y2 D) (3x + 2y)2 = 9x2 -­ 6xy + 4y2
 
Answer & Explanation Answer: A) (3x -­ 2y)2 = 9x2 -­ 12xy + 4y2

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Filed Under: Simplification
Exam Prep: Bank Exams

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Q:

The sum of a fraction and 3 times its reciprocal is 37/10. What is the fraction?

A) 5/2 B) 2/5
C) 5/4 D) 4/5
 
Answer & Explanation Answer: A) 5/2

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Filed Under: Simplification
Exam Prep: Bank Exams

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