Answer:
4/7
Explanation:
Well first we need to find the total amount of houses sold in Clay County.
700 + 100 + 600
= 1,400
Now we need to find the total of houses sold in Lowell and Hillsboro.
700 + 100
= 800
Now we can make the fraction,
800/1400
and simplify
400/700
200/350
20/35
4/7
Thus,
the fraction of houses sold in Hillsboro and Lowell in Clay County is 4/7.
Hope this helps :)