Lakshya Education MCQs

Question:  there were 45 students in a hostel, if the numbers of students increased by 7, the expenses of the mess were increased by rs. 39 per day while the average expenditure per head diminished by re.1. what
Options:
A.Rs. 555
B.Rs. 585
C.Rs. 685
D.Rs. 655
Answer: Option B
Explanation :

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Question 1.  in a class of 18 students in an examination in science 1 student scored 100 marks, 2 get zero each and the average oh the rest was 45. what is the average of the whole class?
  1.    13
  2.    23
  3.    33
  4.    43
Answer: Option D
Explanation :
Question 2.  the average age of father and his two sons is 27 years. five years ago, the average age of the two sons was 12 years. if the difference between the ages of the two sons is four years, what is the pres
  1.    47 years
  2.    42 years
  3.    39 years
  4.    35 years
Answer: Option A
Explanation :
Question 3.  six years ago the average of a family of 4 members was 26 years. a child has been born, due to which the average age of the family is 24 years today. what is present age of the child?
  1.    2 years
  2.    4 years
  3.    6 years
  4.    8 years
Answer: Option D
Explanation :
Question 4.  a man’s daily expenditure is rs. 11 during april, rs. 15 during march and rs. 17 during feb. find the average daily expenditure for the three months (it is a leap year)?
  1.    Rs. 11.30
  2.    Rs. 14.30
  3.    Rs. 17.30
  4.    Rs. 20.30
Answer: Option B
Explanation :
Question 5.  six years ago the average of a family of 4 members was 26 years. a child has been born, due to which the average age of the family is 24 years today. what is present age of the child?
  1.    2 years
  2.    4 years
  3.    6 years
  4.    8 years
Answer: Option D
Explanation :
Question 6.  in a class of 18 students in an examination in science 1 student scored 100 marks, 2 get zero each and the average oh the rest was 45. what is the average of the whole class?
  1.    13
  2.    23
  3.    33
  4.    43
Answer: Option D
Explanation :

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