Average - Questions and Answers

6. The average of five results is 46 and that of the first four is 45. The fifth result is :

7. The average temperature of the first three days is 270 C and that of the next three is 290 C. If the average of the whole week is 28.50 C, the temperature of the last day of the week is :

8. The average of 25 results is 18; that of first twelve is 14 and of last twelve is 17. Thirteenth result is :

9. The average age of 30 students in a class is 12 years. The average age of a group of 5 of the students is 10 years and that of another group of 5 of them is 14 years. The average age of the remaining students is :

10. If a, b, c, d, e are five consecutive odd numbers, their average is :