Average

Average Worksheet-1

1. David obtained 76, 65, 82, 67 and 85 marks (out of 100) in English, Mathematics, Physics, Chemistry and Biology. What are his average marks?

(a) 65                  (b) 69                 (c) 72                  (d) 76

(e) None of these

2. In Arun's opinion, his weight is greater than 65 kg but less than 72 kg. His brother does not agree with Arun and he thinks that Arun's weight is greater than 60 kg but less than 70 kg. His mother's view is that his weight cannot be greater than 68 kg. If all of them are correct in their estimation, what is the average of different probable weights of Arun ?

(a) 67 kg            (b) 68 kg            (c) 69 kg            (d) Data inadequate

Average Worksheet-2

1. The average of a non–zero number and its square is 5 times the number. The number is:

(a) 9                    (b) 17                  (c) 29                  (d) 295

2. The average of 7 consecutive numbers is 20. The largest of these numbers is:

(a) 20                 (b) 22                 (c) 23                  (d) 24

Average Worksheet-3

1. The average age of 35 students in a class is 16 years. The average age of 21 students is 14. What is the average age of remaining 14 students?

(a) 15 years        (b) 17 years       (c) 18 years       (d) 19 years