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 Quantitative Aptitude - Arithmetic Ability Questions

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Q:

A gun is fired at a distance of 6.64 km away from Ram. He hears the sound 20 seconds later. Then the speed of sound is

A) 664 m/s B)  664 km/s
C) 332 m/s D) 332 km/s
 
Answer & Explanation Answer: C) 332 m/s

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Filed Under: Time and Distance
Exam Prep: Bank Exams

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Q:

Chutki can bake 30 cakes in 15 hours. Chutki and Badki together can bake 90 cakes in 30 hours. How many cakes Badki can bake in 10 hours?

A) 75 B) 20
C) 10 D) 60
 
Answer & Explanation Answer: C) 10

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

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Q:

In a container, there is 960 ltr of pure milk from which 48 ltr of milk is replaced with 48 ltr of water, again 48 ltr milk is replaced by same amount of water, as this process is done once more. Now, what is the amount of pure milk?

A) 901.54 ltr B) 821.54 ltr
C) 719.64 ltr D) 823.08 ltr
 
Answer & Explanation Answer: D) 823.08 ltr

Explanation:

Amount of pure milk= a(1 –b/a)n(n = 3, a = pure milk and b = amount replaced)= 960 (1 –48/960)^3= 960(1-1/20)^3= 960 * 19/20 * 19/20*19/20= 823.08 lt.

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Filed Under: Alligation or Mixture
Exam Prep: Bank Exams

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Q:

Giving two successive discounts of 40% is equal to giving one discount of ________%.

A) 80 B) 96
C) 64 D) 72
 
Answer & Explanation Answer: C) 64

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Filed Under: Percentage
Exam Prep: Bank Exams

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Q:

1/(tanA + cotA) is equal to

A) (cosecA + sinA)(secA - cosA) B) √[(cosecA - sinA)(secA - cosA)]
C) √[(cosecA + sinA)(secA - cosA)] D) (cosecA - sinA)(secA - cosA)
 
Answer & Explanation Answer: D) (cosecA - sinA)(secA - cosA)

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Filed Under: Simplification
Exam Prep: Bank Exams

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Q:

What is the value of sin (630 + A) + cos A?

A) √3/2 B) 1/2
C) 0 D) 2/√3
 
Answer & Explanation Answer: C) 0

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Filed Under: Simplification
Exam Prep: Bank Exams

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Q:

If the least common multiple of two numbers, 1728 and K is 5184, then how many values of K are possible?

A) 11 B) 8
C) 6 D) 7
 
Answer & Explanation Answer: D) 7

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Filed Under: Problems on Numbers
Exam Prep: Bank Exams

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Q:

A bag has Rs 30.8 in the form of 1 rupee, 50 paise and 10 paise coins in the ratio of 6:3:2. What is the number of 50 paise coins?

A) 8 B) 24
C) 12 D) 4
 
Answer & Explanation Answer: C) 12

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Filed Under: Simplification
Exam Prep: Bank Exams

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