SOLUTION: if 5a+5b=45, what is the average(arithmetic mean) of a and b?

Question 316869: if 5a+5b=45, what is the average(arithmetic mean) of a and b?
Found 2 solutions by Fombitz, checkley77:
Answer by Fombitz(32388) (Show Source): You can put this solution on YOUR website!

.
.
.
The average of and is
Answer by checkley77(12844) (Show Source): You can put this solution on YOUR website!
5a+5b=45
5(a+b)=45
a+b=45/5
a+b=9
9/2=4.5 ans. for the average of a & b.
Proof:
5*4.5*4.5=45
22.5+22.5=45
45=45

RELATED QUESTIONS
If b = 11a, what is the average (arithmetic mean) of b and a in terms of a? (answered by basketball1127)
If a+b=7(c+d), what would be the average (arithmetic mean) of a, b, c and... (answered by Fombitz)
The average (arithmetic mean) of a and b is 10, whereas the average of b and 10 is c/2.... (answered by Theo)
If the average (arithmetic mean) of 3a and 4b is less than 50, and a is twice b, what is... (answered by ankor@dixie-net.com)
What is the average (arithmetic mean) of 8,7,7,5,3,2,and... (answered by richwmiller,jim_thompson5910,Edwin McCravy)
what is the average (arithmetic mean) of 8,7,7,5,3,2 and... (answered by Alan3354)
what is the average (arithmetic mean)of 8,7,7,5,3,2 and... (answered by richwmiller)
what is the average (arithmetic mean) of 8,7,7,5,3,2, and... (answered by rfer)
What is the average arithmetic mean of 8,7,7,5,3,2,and... (answered by Alan3354)