Answer:
Chris gets $7,466.16 for his work.
Ed gets $7,533.83 for his work.
Step-by-step explanation:
Let's first divide the total money for the work equally between both houses.
So there are $7500 worth of work being done on Ed's house, and another $7500 worth of work being on Chris's house.
We will also see how much total time was spent on each house for the work:
Chris's house = Work done by chris + work done by Ed
Chris's house = 57% + 48% = 105%
Ed's house = Work done by Ed + work done by Chris
Ed's house = 52% + 43% = 95%
We should now split the money available for each house between Chris and Ed depending on the amount of work they did. So we will multiply $7500 for each house to the ratio a person worked on them.
This makes Chris's earning to:
Chris's earning = 7500 * (57/105) + 7500 * (43/95) = $ 7,466.16
Ed's earning = 7500 * (48/105) + 7500 * (52/95) = $ 7,533.83