Average of 11 number is 30. If the average of first 10 numbers is 22, then find the 11th number?

What will be the average of the following set of scores?
59, 84, 44, 98, 30, 40, 58

Find the average of the following set of numbers 148, 88, 184, 166, 96, 122

Subjects, there were 9 boys and some girls. In a test, the mean score obtained by the boys was 13 while that obtained by the girls was 15. If the overall average was 14.28, what was the total number of students in the class? 

In the afternoon, a student read 100 pages at the rate of 60 pages per hour. In the evening, when she was tired, she read 100 more pages at the rate of 40 pages per hour. What was her average rate of reading the pages per hour? 

The average of 20 numbers is 32. If two numbers are 29 and 31, then what is the average of the remaining numbers (correct up to two decimals)?