Question

Find the average of all numbers between 5 and 49 which are divisible by 5.

Answer 1

Step-by-step explanation:

The numbers divisible by 5 are: 5, 10, 15, 20, 25, 30, 35, 40, 45.  

Average = Sum of Quantities

                       Number of Quantities

= (5 + 10 + 15 + 20 + 25 + 30 + 35 + 40 + 45) = 225 = 25

                                        9                                                   9

Answer 2

Answer:

25

Step-by-step explanation:

Given : Numbers between 5 and 49 which are divisible by 5.

To Find : Find the average of all numbers between 5 and 49 which are divisible by 5.

Solution:

Numbers between 5 and 49 which are divisible by 5 are 5, 10, 15, 20, 25, 30, 35, 40, 45.  

$Average =\frac{\text{Sum of all observations}}{\text{No. of observations}}$

$Average =\frac{5+10+15+20+25+30+ 35+ 40+45}{9}$

$Average =25$

Hence the average of all numbers between 5 and 49 which are divisible by 5 is 25