Question

Q.9) The ages of 40 students are shown in the following table.
Students 5 , 20 , 12 , 3
Ages. 13, 14 , 15 , 16
What is the average age of the students? explain STEP BY STEP​

Answer 1

Answer:

the ages of 40 students are 5*13+50*14+12*15+3*16=389328

so the average is 389328/40=9733.2

Step-by-step explanation:

I hope this will helps u

Answer 2

Answer:

5×13 = 65

14×20 = 280

15×12 = 180

16×3 = 48

so the sum of the numbers = 65+280+180+48 = 573

so now the sum of number need to be divided by the total number of students

= 573