LAST TIME REVISION (AVERAGE)-2 ++

1) The average age of 25 men is 28 years , 5 new men of an average age of 25 years joined them. Find the average age of all the men together.
a) 27.5 b) 29.5 c) 26.5 d) 28.5

2) The difference between the average of first ten prime numbers and the first ten prime numbers of 2- digit is
a) 14.5 b) 16.5 c) 12.5 d) 13.5 

3) The average of 1088 real numbers is 0. Atmost how many of them can be negative ?
a) 100 b) 88 c) 544 d) 1087

4) The average of 6 consecutive integers is 15/2. What is the average of last three integers ?
a) 8  b) 9  c) 17/2 d) 7 

5) The average of 14 numbers is 32. If the average last 5 numbers is 26, then what is the average of the remaining numbers?
a) 35.33 b) 41.33  c) 27.5  d) 44.5 

6) 9 years ago, the average age of a family of 5 members was 33 years. Now, 3 new members join whose ages are in ascending order with consecutive gaps of 8 yr. If the present average age of the family is the same as it was 9 years ago. What is the average age (in year) of the youngest new member
a) 15 b) 17 c) 10 d) 9 

7) The average age of 15 persons is 32 years . If tow more persons are added, then the average age is increased by 3 years. The new Persons have age difference of 7 years. The age (in year) of the younger among the new Persons is
a) 54 b) 61 c) 50 d) 58 

8) The average of 24 number is 65. The average of first 11 numbers is 67 and the average of last 10 numbers is 70. If the 12th number is 13 less than the 13th number and the 14th number is one more than the 13th number, then the average of 12th and 14th number is 
a) 39 b) 36 c) 26 d) 42

9) The average weight of the students in a group was 75.4 kg. Later on, 4 students having weights , 72.9 kg, 73.8 kg, 79.5 kg and 87.4 kg joined the group. As a result, the average weight of all the students in the group increased by 0.24 kg. What was the number of students in the group initially ?
a) 46 b) 36 c) 50 d) 48 

10) In a class of 80 students ,60% participate in games and the rest do not. The average weight of the former group is 5% more than that of the letter. If the average weight of all the students is 103/2kg, then what is the average weight (in kg) of the former group ?
a) 57.6 b) 54.5 c) 60 d) 52.5 

11) Of the five members whose average is 72, the first is 1/8 times the sum of other four. The first number is ..
a) 60 b) 26 c) 40 d) 80

12) Average of 31 number is 19, if the average of first 8 numbers is 24, then what is the average of the remaining numbers 
a) 17.26 b) 23.25 c) 26.2 d) 25.45

13) If  23x + 23y=184, then what is the average age of x and y
a)  2 b) 4 c) 3  d) 2.5 

14) In a class of 65 students there are 39 girls . The average weight of these girls is 60 kg and average weight of the full class is 64 kg. What is the average weight of the boys of the class?
a) 69 b) 66 c) 68 d) 70 

15) Among four students sitting in a row, average age of last three students is 20 years and the average of the first Three Students is 21 year. If the age of the first student is 26 year, then what is the age (in years) of the last student?
a) 23 b) 37 c) 24  d) 29

16) The average of 8 consecutive integers is 23/2. What is the average of the first three integers
a) 9 b)19/2 c) 8  d) 10

17) The average weight of the two players P and Q of a football team is 38 kg. The average weight of P, Q and their coach T is 49 kg. What is the weight (in kg) of coach ?
a) 71 b) 46 c) 76 d) 91

18) Of the 5 numbers whose average is 76, the first is 3/7 times the sum of other 4. The first number is
a) 171 b) 114 c) 76 d) 228

19) The average age of 8 members of a group is 36 yr. The age of the eldest member is 32 yr. If we exclude that eldest member from the group, then what will be the average age(in yrs) of the remaining members?
a) 38.5 b) 42.67 c) 48.5 d) 36.57

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