Question

A,b and c are 3 values, such that a +b=5, b c = 7.5 and c+ a =8.5 what will be the average of these values?

Answer 1

Answer:

3.5

Step-by-step explanation:

(a+b)+(b+c)+(c+a) = 5+7.5+8.5

2a+2b+2c = 21

2(a+b+c) = 21

a+b+c = 21/2

a+b+c = 10.5

average of 3 num= sum of num/ 3

= 10.5/3

= 3.5