So you do 43-8.6 to get how much Jessica collected which is $34.40.
Then to get Robins you do .35 ×43 which gets you $15.05 but then you have to add that to Travis money to get how much robin collected which is $58.05. But then you have to add them together 34.40+43+58.05 which is $135.45. So altogether they collected $135.05 in all.