Quantitative Aptitude - Arithmetic Ability Questions

Q:

A line cuts two concentric circles. The lengths of chords formed by that line on the two circles are 4 cm and 16 cm. What is the difference (in cm2) in squares of radii of two circles?

A) 240 B) 120
C) 60 D) 90
 
Answer & Explanation Answer: C) 60

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Filed Under: Area
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Q:

What is the simplified value of cosec6A  cot6A  3 cosec2A cot2A?

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

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Filed Under: Simplification
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Q:

The ratio of the amount of work done by (x-1) labours in (x+1) days and that done by (x+1) labours in (x+2) days is 5 : 6. Then the value of x is

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

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Filed Under: Ratios and Proportions
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Q:

To cover a distance of 90 km in 2.5 hours what should be the average speed of the car in meters/second?

A) 10 B) 20
C) 30 D) 40
 
Answer & Explanation Answer: A) 10

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Filed Under: Time and Distance
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Q:

A bus moves at a speed of 84 km/hr after repairing and moves at a speed of 56 km/hr before repairing. It covers 2x distance in 8 hours after repairing.How much time (in hours) will it take to cover x distance before repairing?

A) 8 B) 5
C) 6 D) 9
 
Answer & Explanation Answer: C) 6

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Filed Under: Time and Distance
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Q:

If sec2θ + tan2θ = 5/3, then what is the value of tan2θ?

A) 2√3 B) √3
C) 1/√3 D) Cannot be determined
 
Answer & Explanation Answer: B) √3

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Q:

A car travels from A to B with 40 Km/h and returns from B to A with 60 Km/h. Its average speed during the whole journey is

A) 48 km/h B) 50 km/h
C) 45 km/h D) 60 km/h
 
Answer & Explanation Answer: A) 48 km/h

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Q:

A 800 metres long train is running at the speed of 90 km/hr. If it crosses a bridge in 50 seconds, then what is the length (in metres) of the bridge?

A) 250 B) 300
C) 350 D) 450
 
Answer & Explanation Answer: D) 450

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Filed Under: Time and Distance
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