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The ratio of number of boys and girls in a class is 2 : 3. The average weight of boys and girls in the class is 18 kg and 21 kg respectively. What is theaverage weight (in kgs) of all the boys and girls together?
A
99\/5
B
101\/5
C
109\/6
D
96\/5
Correct Answer:
99\/5
In a class of 39 students there are 26 girls. The average weight of these girls is 42 Kgs and average weight of the full class is 48 kgs. What is theaverage weight (in kgs) of the boys of the class?
A
54
B
66
C
60
D
62
In a class of 50 students there are 27 boys. The average weight of these boys is 72 Kg and average weight of the full class is 55.44 kgs. What is theaverage weight (in kgs) of the girls of the class?
A
42
B
48
C
30
D
36
The average weight of a group of 75 girls was calculated as 47 kgs. It was later discovered that the weight of one of the girls was read as 45 kgs. Whereas her actual weight was 25 kgs. What is the actual average weight of the group of 75 girls? ( Rounded off to two digits after decimal).
A
34
B
36
C
30
D
None of these
The average weight of A, B and C is 40 kgs. Weight of C is 24 kgs more than A’s weight and 3 kgs less than B’s weight. What will be the average weight of A, B, C and D, if D weights 15 kgs less than C?
A
42 kgs
B
40 kgs
C
36 kgs
D
38 kgs
In a class of 50 students there are 27 girls. The average weight of these girls is 45 kg and average weight of the full class is 49.6 kgs. What is theaverage weight of the boys of the class?
A
55
B
54.2
C
53.4
D
53
The average weight of 30 students in a class is 25 kgs. If the weight of the class teacher is added, the average weight increase by 2 kgs. The weight of the class teacher in kgs is
A
86
B
84
C
81
D
87
The ratio of boys to girls in class A is 3 to 4 . The ratio of boys to girls in class B is 4 to 5 . If the two classes were combined, the ratio of boys to girls in class B is two less than the number of girls in class A. How many girls are in class A?
A
87
B
11
C
12
D
15
The average weight of 16 boys in a class is 50.25 kgs and that of the remaining 8 boys is 45.15 kgs. Find the average weight of all the boys in the class.
A
47.55 kgs
B
48 kgs
C
48.55 kgs
D
49.25 kgs
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 kgs. What is the average weight of the boys of the class?
A
69
B
66
C
68
D
70
In a class of 60 students there are 30 girls. The average weight of these girls is 58 Kg and average weight of the full class is 63 kgs. What is the average weight of the boys of the class?
A
67
B
66
C
68
D
65