Respuesta :

she would have saved 30 dollars. 

in the first week ( we know it is first week because if it were plural weeks like 'in the first 3 weeks')

so 24 in first week
6-1=5
5 weeks to go

5 weeks times amount gained per week=more
5 times 6=30

30+24=54

she will have saved $54 in 6 weeks