Answer:
(x+1,1x)2=average
Step-by-step explanation:
We know the second test is ten porcent higher than the firt and we can represent the second as an expression of the first
Lets say 1 represent 100% and thats the porcent in the first test
Then 1,1 represent 110% and thats second test in terms of the first test
The average is (test1+test2)2=average
Test1=x
Test2=110%x=1,1x
The expression is
(x+1,1x)/2=average
