Quantitative Aptitude - Arithmetic Ability Questions

Q:

If sin3A = x, then value of x is

A) 3sinA + 4sin3A B) 4sin3A -­ 3sinA
C) 4sin3A + sinA D) 3sinA -­ 4sin3A
 
Answer & Explanation Answer: D) 3sinA -­ 4sin3A

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Q:

A man travels 800 km in partly by rail and partly by steamer. He spends 7 hours more time on steamer. If the velocity of the steamer is 20 km/hr and the velocity of rail is 55 km/hr, how much distance does he cover by steamer?

A) 316 km B) 379 km
C) 474 km D) 569 km
 
Answer & Explanation Answer: A) 316 km

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Q:

A shopkeeper purchased 510 eggs at the rate of Rs. 20 per dozen. 30 eggs were broken on the way. In order to make a gain of 20%, he must sell the remaining eggs at the rate of

A) Rs. 22.50 per dozen B) Rs. 25.50 per dozen
C) Rs. 26 per dozen D) Rs. 26.50 per dozen
 
Answer & Explanation Answer: B) Rs. 25.50 per dozen

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Q:

The average age of 24 students is 12 years. It was observed that while calculating the average age, the age of a student was taken as 14 years instead of 8 years. What will be the correct average age (in years)?

A) 11.25 B) 11.5
C) 11.75 D) 12.25
 
Answer & Explanation Answer: C) 11.75

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Q:

The average height of 40 sticks is 154 cm. Some sticks of average height 160 cm are taken out. If the new average height is 150 cm, then how many sticks are remaining?

 

A) 12 B) 16
C) 24 D) 28
 
Answer & Explanation Answer: C) 24

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Q:

Rs 11,550 has to be divided between X, Y & Z such that X gets 4/5 of what Y gets and Y gets 2/3 of what Z gets. How much more does Z get over X (in Rs)?

A) 7200 B) 1800
C) 1390 D) 2450
 
Answer & Explanation Answer: D) 2450

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Filed Under: Percentage
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Q:

The value of cos220°+cos270° is

A) 0 B) 1
C) 1/2 D) 13
 
Answer & Explanation Answer: B) 1

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Q:

If Rs. 10000 amounts to Rs. 11664 invested in compound interest(compounded annually) for two years then the annual rate of compound interest is

A) 10% B) 9%
C) 8% D) 6%
 
Answer & Explanation Answer: C) 8%

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Filed Under: Compound Interest
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