The greatest common factor is 2
5/8 is 0.625 , so that would be the decimal for it
40 hrs at 8 bucks, 40*8 or 320, now, is 2 workers, so 320+320 or 640
so... how much is 640 from 2000 in percentage? well, if we take 2000 as the 100%, then

solve for "x"
Answer:
He is 15 years old.
Step-by-step explanation:
I hope this helps :)