# 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

1.  2 years

2.  4 years

3.  8 years

4.  15 years

4

15 years

Explanation :
No Explanation available for this question

# 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

1.  15 years

2.  18 years

3.  20 years

4.  Cannot be determined

4

Cannot be determined

Explanation :
No Explanation available for this question

# The average age of a group of persons going for picnic is 16 years. Twenty new persons with an average age of 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:

1.  5

2.  10

3.  20

4.  30

4

20

Explanation :
No Explanation available for this question

# 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

1.  Man: Rs. 25; Woman: Rs. 20

2.  Man: Rs. 27.50; Woman: Rs. 22.50

3.  Man: Rs. 30; Woman: Rs. 25

4.  Man: Rs. 32.50; Woman: Rs. 27.50

4

Man: Rs. 27.50; Woman: Rs. 22.50

Explanation :
No Explanation available for this question

# 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:

1.  45

2.  50

3.  51.4 approx.

4.  54.6 approx

4

51.4 approx.

Explanation :
No Explanation available for this question

# 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:

1.  20

2.  21

3.  22

4.  23

4

21

Explanation :
No Explanation available for this question

# 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 girls in the school is:

1.  150

2.  250

3.  350

4.  450

4

150

Explanation :
No Explanation available for this question

# In an examinations, 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 papers were there in the examination

1.  8

2.  9

3.  10

4.  11

5.  12

5

11

Explanation :
No Explanation available for this question

# 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:

1.  1 :2

2.  2 : 3

3.  3 : 4

4.  3 : 5

4

2 : 3

Explanation :
No Explanation available for this question

# What is the average age of children in the class I. Age of the teacher is as many years as the number of children. II. Average age increased by 1 year if the teacher’s age is also included.

1.  if the data in statement I alone are sufficient to answer the question, while the data in statement II alone are not sufficient to answer the question

2.  if the data in statement II alone are sufficient to answer the question, while the data in statement  I alone are not sufficient to answer the question;

3.  if the data either in statement I or in statement II alone are sufficient to answer the question;

4.  if the data even in both statements I and II together are not sufficient to answer the question;

5.  if the data in both statements I and II together are necessary to answer the question.

5