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1.
A square garden has fourteen posts along each side at equal interval. Find how many posts are there in all foursides:
  • [A] 56
  • [C] 44
  • [B] 52
  • [D] 60
  • Answer & Explanation
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Answer & Explanation : [B]
 
Reqd no. of posts = 4 (at the corners) + 4 12 (in between on the sides)
 
= 4 + 48 = 52
 
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2.
Average age of students of an adult school is 40 years. 120 new students whose average age is 32 years joined the school. As a result the average age is decreased by 4 years. Find the number of students of the school after joining of the new students:
  • [A] 1200
  • [C] 360
  • [B] 120
  • [D] 240
  • Answer & Explanation
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Answer : [D]
Explanation :
 
Let the original no. of students be X
 
A.T.S. 40X + 120 32 = (X + 120)36 ⇒ X = 120
 
Reqd no. of students after joining the new students = X + 120 = 240
 
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3.
When Rs 250 added to 1/4th of a given amount of money makes it smaller than 1/3rd of the given amount of money by Rs 100. What is the given amount of money?
  • [A] Rs 350
  • [C] Rs 4200
  • [B] Rs 600
  • [D] Rs 3600
  • Answer & Explanation
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Answer : [C]
Explanation :
 
Let the given amount be Rs X
 
A.T.S. X   - ( X  + 250) = 100 ⇒ X = Rs 4200      
3 4      
 
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4.
Find the least number of candidates in an examination so that the percentage of successful candidates should be 76.8%:
  • [A] 500
  • [C] 125
  • [B] 250
  • [D] 1000
  • Answer & Explanation
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Answer : [C]
Explanation :
 
No. of successful candidates = 76.8% of X
 
X = total students
 
= ( 768   x   X )   =   96 X    
10x100 125    
 
Which must be a whole no. The reqd least no. = 125
 
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5.
The number of times a bucket of capacity 4 litres to be used to fill up a tank is less than the number of times another bucket of capacity 3 litres used for the same purpose by 4. What is the capacity of the tank?
  • [A] 360 litres
  • [C] 48 litres
  • [B] 256 litres
  • [D] 525 litres
  • Answer & Explanation
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Answer : [B]
Explanation :
 
X   -   X   = 4 ⇒ X = 48 litres    
4 3    
 
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