In a class, the average age of 45 boys is 18 years and the average of 35 girls is 15 years. what is ...
In a class, the average age of 45 boys is 18 years and the average of 35 girls is 15 years. what is the average age of the whole class?
Answer/Solution
16.6 Years
Steps/Work
Total age of 80 students
(45X 18+35 X 15) = 1335
Average = 1335/80 = 16.6 Years
D)
(45X 18+35 X 15) = 1335
Average = 1335/80 = 16.6 Years
D)