basicallly find the avverage
average is found by adding tht 2 numbers together and dividing by the number of nuber you aded together so exg
average of 6 and 12=(6+12)/2 because 6 and 12 is 2 numbers so
0.5 and 8/9 are 2 numbers
convert to fraction
0.5=0.5/1
multiply by 2
1/2=0.5
average of 1/2 and 8/9
make denomenators same bottom number
2 and 9
multiply and get 18
1/2 times 9/9=9/18
8/9 times 2/2=18/16
(9/18+16/18)/2=(25/18)/2=25/18 times 1/2=25/36
the naswer is C 25/36