Question

Find the average of 3 multiples

Answer 1

Answer:

The average of the first three multiples of 3 .

Step-by-step explanation:

First 3 multiples of 3 = 3 , 6 , 9

3+6+9/3 = 18 / 3 = 6

6 is the average.

Hope I helped you.

Answer 2

31.5.

Step-by-step explanation:

The first 20 multiples of 3 are 3, 6, 9, 12,......, 60.

3+6+9+12+15+.....+60.

= {Since, sum of n natural numbers stating from 1 is given by n(n+1)/2}

=630.

Hence, the average of those multiples will be 630/20=31.5.