Quantitative Aptitude - Arithmetic Ability Questions

Q:

The average of 25 consecutive odd integers is 55. The highest of these integers is

A) 79 B) 105
C) 155 D) 109
 
Answer & Explanation Answer: A) 79

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Q:

When a number is increased by 24, it becomes 115% of itself. What is the number?

A) 160 B) 250
C) 100 D) 200
 
Answer & Explanation Answer: A) 160

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Filed Under: Percentage
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Q:

If A is 6 times more than B, then by what percentage is B is less than A?

A) 64.82 B) 83.33
C) 28.56 D) 85.71
 
Answer & Explanation Answer: D) 85.71

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Q:

0.09% of 25% of 1200 is equal to____________.

A) 0.27 B) 2.7
C) 27 D) 270
 
Answer & Explanation Answer: A) 0.27

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Q:

If A = (1/0.4) + (1/0.04) + (1/0.004) + ... upto 8 terms, then what is the value of A?

A) 27272727.5 B) 25252525.5
C) 27777777.5 D) 25555555.5
 
Answer & Explanation Answer: C) 27777777.5

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Filed Under: Simplification
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Q:

S, T and U together can complete a work in 30 days. If the ratio of efficiency of S, T and U is 20 : 15 : 12 respectively, then in how many days U alone can complete the same work?

A) 195/2 B) 235/2
C) 225/2 D) 215/2
 
Answer & Explanation Answer: B) 235/2

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Filed Under: Time and Work
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Q:

In the following question, select the odd letters from the given alternatives.

A) MN B) NM
C) OL D) ET
 
Answer & Explanation Answer: D) ET

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Filed Under: Odd Man Out
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Q:

There are two parallel streets each directed north to south. A person in the first street travelling from south to north wishes to take the second street which is on his right side. At some place, he makes a 150 deg turn to the right and he travels for 15 minutes at the speed of 20 km/hr. After that he takes a left turn of 60 deg and travels for 20 minutes at the speed of 30 km/hr in order to meet the second street. What is the distance between the two streets?

A) 7.5 km B) 10.5 km
C) 12.5 km D) 15 km
 
Answer & Explanation Answer: C) 12.5 km

Explanation:
Initially the person is travelling from south to north i.e. D to A
He takes 150 deg right turn and moves AB distance and then he takes 60 deg left turn travels BC
AB = 20km/hr * 15/60 hr = 5km
BC = 30 * 20/60 = 10 km
We know that distance between both the streets is DC = DB + BC
DB = AB cos 60o= 5. ½ =2.5 km
So the distance between streets = 12.5 km
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Filed Under: Height and Distance
Exam Prep: Bank Exams

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