Question

If 25a+25b=115 then what is the average of a and b

Answer 1

25 (a+b)=115than a+b= 23/5 and answer is 23/10

Answer 2

Answer:

2.3

Step-by-step explanation:

25a+25b=115

(divide the eqn by 5 on both sides)

5a +5b =23

5(a+b) =23

 a+b   =23/5

avg of (a+b) =(a+b)/2

                     =(23/5)/2

                      =23/10

                       =2.3