Ques 1 Average
Total weekly emoluments of the workers of a factory is Rs.1534. Average weekly emolument of a worker is Rs.118. The number of workers in the factory is.
a) 13
b) 12
c) 14
d) 16
Ques 2 Average
The average of the marks obtained in an examination by 8 students was 51 and by 9 other students was 68. The average marks of all 17 students was.
a) 60
b) 60.5
c) 59.5
d) 59
Ques 3 Average
The average temperature of the first 4 days of a week was 37°C and that of the last 4 days of the week was 41°C. If the average temperature of the whole week was 39°C, the temperature of the fourth day was.
a) 38.5°C
b) 40°C
c) 39°C
d) 38°C
Ques 4 Average
Out of four numbers the average of the first three is 16 and that of the last three is 15. If the last number is 20 then the first number is.
a) 25
b) 21
c) 28
d) 23
Ques 5 Average
The average of 13 results is 70. The average of first seven is 65 and that of the last seven is 75, the seventh result is.
a) 70
b) 70.5
c) 68
d) 67
Ques 6 Average
The mean of 11 numbers is 35. If the mean of first 6 numbers is 32 and that of the last 6 numbers is 37, find the sixth number.
a) 29
b) 27
c) 30
d) 28