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 Quantitative Aptitude - Arithmetic Ability Questions

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Q:

The average age of a group of 10 students is 15 years. When 5 more students join the group, the average age increase by 1 year. The average age of the new students is?

Answer

Total age of 10 students = 150 years


Total age of 15 students = 240 years


Total age of 5 new students = 240 - 150 = 90 years


\inline \therefore Average age of 5 new students =  = 18 years

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Subject: Problems on Ages

155 31012
Q:

The smallest number which when diminished by 7,  is divisible by  12, 16, 18, 21 and 28 is

A) 1008 B) 1015
C) 1022 D) 1032
 
Answer & Explanation Answer: B) 1015

Explanation:

Required Number = (L.C.M  of 12, 16, 18,21,28)+7

= 1008 + 7

= 1015

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Filed Under: HCF and LCM

101 31009
Q:

In the following question, select the odd word pair from the given alternatives.

 

A) Sister – Female B) Male – Father
C) Brother – Male D) Grandmother – Female
 
Answer & Explanation Answer: B) Male – Father

Explanation:
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Filed Under: Odd Man Out
Exam Prep: Bank Exams

2 30988
Q:

In the following question, select the odd word pair from the given alternatives.

 

 

 

A) Cup – Tea B) Jug – Water
C) Bowl – Curd D) Pen – Butter
 
Answer & Explanation Answer: D) Pen – Butter

Explanation:
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Filed Under: Odd Man Out
Exam Prep: Bank Exams

0 30966
Q:

If the sum of the interior angles of a regular polygon is 720° then how many sides does it have?

 

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

Explanation:
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Filed Under: Area
Exam Prep: Bank Exams

0 30956
Q:

The tangent at any point of the circle is _________________ to the radius through the point of contact.

 

A) parallel B) intersecting
C) perpendicular D) equal
 
Answer & Explanation Answer: C) perpendicular

Explanation:
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Filed Under: Area
Exam Prep: Bank Exams

0 30854
Q:

The area of a square is 42.25 cm². Find its perimeter (in cm).

 

A) 52 B) 26
C) 28 D) 56
 
Answer & Explanation Answer: B) 26

Explanation:
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Filed Under: Area
Exam Prep: Bank Exams

0 30798
Q:

In a regular week, there are 5 working days and for each day, the working hours are 8. A man gets Rs. 2.40 per hour for regular work and Rs. 3.20 per hours for overtime. If he earns Rs. 432 in 4 weeks, then how many hours does he work for ?

A) 160 B) 175
C) 180 D) 195
 
Answer & Explanation Answer: B) 175

Explanation:

Suppose the man works overtime for x hours.

Now, working hours in 4 weeks = (5 x 8 x 4) = 160.

Therefore,  160 * 2.40 + x * 3.20 = 432

 => 3.20x = 432 - 384 = 48

 => x = 15.

 Hence, total hours of work = (160 + 15) = 175.

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Filed Under: Simplification

34 30768