Question 1187778
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Before the extra work and the changing of moneys

Frankie                 2j
Manuel                  3j
Jeremy                   j
TOTAL                   120
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{{{6j=120}}}
{{{j=20}}}

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That first part means,
Frankie               40
Manuel                60
Jeremy                20
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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
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You can continue for the final question.