Quantitative Aptitude - Arithmetic Ability Questions

Q:

In a class of 65 students there are 39 girls. The average weight of these girls is 60 Kg and average weight of the full class is 64 kgs. What is the average weight of the boys of the class?

A) 69 B) 66
C) 68 D) 70
 
Answer & Explanation Answer: D) 70

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Q:

cot3A is equal to

A) 3cotA -­ cot3A(1 -­ 3cot2A) B) 3cotA + cot3A(1 -­ 3cot2A)
C) 3cotA -­ cot3A(1 + 3cot2A) D) 3cotA + cot3A(1 + 3cot2A)
 
Answer & Explanation Answer: A) 3cotA -­ cot3A(1 -­ 3cot2A)

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Q:

By selling 175 pineapples, the gain is equal to the selling price of 50 pineapples. What is the gain percentage?

A) 28 B) 30
C) 32 D) 40
 
Answer & Explanation Answer: D) 40

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Filed Under: Percentage
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Q:

A T.V was sold at a profit of 5% If it had been sold at a profit of 10% , the profit would have been Rs. 1000 more. What is its cost price ?

A) Rs.20000 B) Rs.5000
C) Rs.10000 D) Rs.15000
 
Answer & Explanation Answer: A) Rs.20000

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Q:

A number is divided by 52, we get 27 as remainder. On dividing the same number by 13, what will be the remainder?

A) 2 B) 7
C) 1 D) None
 
Answer & Explanation Answer: C) 1

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Filed Under: Problems on Numbers
Exam Prep: Bank Exams , CAT

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Q:

If two flood gates A and B function simultaneously, the reservoir will be filled iu 6 hours. Gate A fills the reservoir 5 hours faster than gate B. How many hours does the faster flood gate take to fill the reservoir?

A) 7 hrs B) 13 hrs
C) 5 hrs D) 10 hrs
 
Answer & Explanation Answer: D) 10 hrs

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

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Q:

A train is running at a speed of 116 kms/hr. The distance covered by the train in meters in 18 secs is

A) 900m B) 1160m
C) 508m D) 580m
 
Answer & Explanation Answer: D) 580m

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Filed Under: Problems on Trains
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Q:

What is the simplified value of [2/(cot A – tan A)]?

A) sin A cos A B) tan 2A
C) sin2 A D) cos2 A
 
Answer & Explanation Answer: B) tan 2A

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