Answer:
7.125
Step-by-step explanation:
Convert each fraction to a decimal
1/4=.25 = 8.250
1/2=.5 = 6.500
5/8=.625 = 6.625
Then, add all of them together
8.250+6.500+6.625=21.375
Lastly, divide by 3 because that's how many values you have
21.375/3=7.125
