Question

If 25a + 25b =125, then what is the average of a and b?

Answer 1

25a + 25b = 125

Divide both sides by 25

a + b = 5

Divide both sides by 2

(a + b)/2 = 5/2 = 2.5

Average of a and b is 2.5

Answer 2

Answer:

2.5

Step-by-step explanation:

25a+25b = 125

(divide the eqn by 25 on both sides)

a+b=  5

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

                     =5/2

                      =2.5