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Average Aptitude Questions Answers Problems – Page 4

Average Aptitude Questions Answers Problems Test Online MCQ – Page 4

Average 4

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Question 1
 The average monthly salary of 20 employees in an organization is Rs. 1500. If the manager’s salary is added, then the average salary increases by Rs. 100. What is the manager’s monthly salary ?
 
A
a) Rs. 2000
B
b) Rs. 2400
C
c) Rs. 3600
D
d) Rs. 4800
Question 2
The average weight of a class of 24 students is 35 kg. If the weight of the teacher be included, the average rises by 400 g. The weight of the teacher is :
 
A
a) 45 kg
B
b) 50 kg
C
c) 53 kg
D
d) 55 kg
Question 3
The average age of the mother and her six children is 12 years which is reduced by 5 years if the age of the mother is excluded. How old is the mother?
A
a) 40 years
B
b) 42 years
C
c) 48 years
D
d) 50 years
Question 4
The captain of a cricket team of 11 members is 26 years old and the wicket keeper is 3 years older. If the ages of these two are excluded, the average age of the remaining players is one year less than the average age of the whole team. What is the average age of the team ?
 
A
a) 23 years
B
b) 24 years
C
c) 25 years
D
d) None of these
Question 5
The average height of 25 boys is 1.4 m. When 5 boys leave the group, then the average height increases by 0.15 m. What is the average height of the 5 boys who leave ?
 
A
a) 0.8 m
B
b) 0.9 m
C
c) 0.95 m
D
d) 1.05 m
Question 6
The average weight of 8 persons increases by 2.5 kg when a new person comes in place of one of them weighing 65 kg. What might be the weight of the new person ?
 
A
a) 76 kg
B
b) 76.5 kg
C
c) 85 kg
D
d) Data inadequate
Question 7
The average weight of 45 students in a class is 52 kg. Five of them whose average weight is 48 kg leave the class and other 5 students whose average weight is 54 kg join the class. What is the new average weight (in kg) of the class ?
A
a) 52
B
b) 52
C
c) 52
D
d) None of these
Question 8
The average age of 8 men is increased by 2 years when two of them whose ages are 21 years and 23 years are replaced by two new men. The average age of the two new men is :
 
A
a) 22 years
B
b) 24 years
C
c) 28 years
D
d) 30 years
Question 9
      The average of five consecutive numbers is n. If the next two numbers are also included, the average will :
 
A
a) Remain the same
B
b) Increase by 1
C
c) Increase by 1.4
D
d) Increase by 2
Question 10
 A cricketer has a certain average for 10 innings. In the eleventh inning, he scored 108 runs, thereby increasing his average by 6 runs. His new average is :
 
A
a) 48 runs
B
b) 52 runs
C
c) 55 runs
D
d) 60 runs
Question 11
A cricketer whose bowling average is 12.4 runs per wicket takes 5 wickets for 26 runs and thereby decreases his average by 0.4. The number of wickets taken by him till the last match was :
A
a) 64
B
b) 72
C
c) 80
D
d) 85
Question 12
 A team of 8 persons joins in a shooting competition. The best marksman scored 85 points. If he had scored 92 points, the average score for the tems would have been 84. The number of points, the tham scored was :
 
A
a) 588
B
b) 645
C
c) 665
D
d) 672
Question 13
 A motorist travels to a place 150 km away at an average speed of 50 km / hr and returns at 30 km /hr. His average speed for the whole journey in km / hr is :
 
A
a) 35
B
b) 37
C
c) 37.5
D
d) 40
Question 14
The average weight of 3 men A, B and C is 84 kg. Another man D joins the group and the average now becomes 80 kg. If another man E, whose weight is 3 kg more than that of D, replaces A, then the average weight of B, C, D and E becomes 79 kg. The weight of A is :
A
a) 70 kg
B
b) 72 kg
C
c) 75 kg
D
d) 80 kg
Question 15
 The average age of husband, wife and their child 3 years ago was 27 years and that of wife and the child 5 years ago was 20 years. The present age of the husband is :
 
A
a) 35 tears
B
b) 40 years
C
c) 50 years
D
d) None of these
Question 16
 10 years ago, the average age of a family of 4 members was 24 years. Two children having been born (with age difference of 2 years), the present average age of the family is the same. The present age of the youngest child is :
 
A
a) 1 years
B
b) 2 years
C
c) 3 years
D
d) 5 years
Question 17
After replacing an old member by a new member, it was found that the average age of five members of a club is the same as it was 3 years ago. What is the difference between the ages of the replaced and the new member ?
A
a) 2 years
B
b) 4 years
C
c) 8 years
D
d) 15 years
Question 18
The average age of 3 children in a family is 20% of the average age of the father and the eldest child. The total age of the mother and the youngest child is 39 years. If the father’s age is 26 years, what is the age of second child?
A
a) 15 years
B
b) 18 years
C
c) 20 years
D
d) Cannot be determined
Question 19
The average age of a group of persons going for picnic is 16 years. Twenty new persons with an average age of a 15 years join the group on the spot due to which their average age becomes 15.5 years. The number of persons initially going for picnic is :
 
A
a) 5
B
b) 10
C
c) 20
D
d) 30
Question 20
A certain factory employed 600 men and 400 women and the average wage was Rs. 25.50 per day. If a woman got Rs. 5 less than a man, then what are their daily wages ?
A
a) Man : Rs. 25; Woman : Rs. 20
B
b) Man : Rs. 27.50, Woman : Rs. 22.50
C
c) Man : Rs. 30, Woman : Rs. 25
D
d) Man : Rs. 32.50, Woman : 27.50
Question 21
  The arithmetic mean of the scores of a group of students in a test was 52. The brightest 20% of them secured a mean score of 80 and the dullest 25% a mean score of 31. The mean score of remaining 55% is :
 
A
a) 45
B
b) 50
C
c) 51.4 approx
D
d) 54.6 approx
Question 22
The average salary of all the workers in a workshop is Rs. 8000. The average salary of 7 technicians is Rs. 12000 and the average salary of the rest is Rs. 6000. The total number of workers in the workshop is :
 
A
a) 20
B
b) 21
C
c) 22
D
d) 23
Question 23
 In a school with 600 students, the average age of the boys is 12 years and that of the girls is 11 years. If the average age of the school is 11 years 9 months, then the number of in the school is :
 
A
a) 150
B
b) 250
C
c) 350
D
d) 450
Question 24
In an examination, a pupil’s average marks were 63 per paper. If he had obtained 20 more marks for his Geography paper and 2 more marks for his History paper, his average per paper would have been 65. How many paper were there in the examination?
 
A
a) 8
B
b) 9
C
c) 10
D
d) 11
Question 25
The average age of students of a class is 15.8 years. The average age of boys in the class is 16.4 years and that of the girls is 15.4 years. The ratio of the number of boys to the number of girls in the class is :
 
A
a) 1 : 2
B
b) 2 : 3
C
c) 3 : 4
D
d) 3 : 5
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