Before the extra work and the changing of moneys
Frankie 2j
Manuel 3j
Jeremy j
TOTAL 120

That first part means,
Frankie 40
Manuel 60
Jeremy 20
Manuel then gave Frankie 1/4 of his money. Jeremy worked extra and earned 4 times the amount he earned previously.
Frankie 55
Manuel 45
Jeremy 20+4*20=100
You can continue for the final question.