Filipa, Jack and Jaoa have saved £165 in total

You question is pretty bad, zyron could have anywhere from zero to infinte dollars. 

X + Y + Z = 165

3X = Y

Z = 40 + A 

4X + A = 125

Filipa F, Jack K   and Jaoa A       have saved £165 in total        F+K+A=165

Filipa has saved three times as much as Jack                          f=3J

Jaoa has saved £40 more than zyron                                       Who is Zyron?

Work out how much has Filipa saved?                                     F=?

How do you approach this question?

The only real logical guess is that jaoe saved  £102.5 and zyron stole all of filipa and jacks money leaving him with £62.5.