Question 1128271
In a girl's boutique, Abby and Mary Ann work in the embroidery section.
 They finish a certain job if Abby and Mary Ann works for 3 days or if they work together for 6 days.
How long will it take each to do the job alone? 
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This sentence makes no sense!
" They finish a certain job if Abby and Mary Ann works for 3 days or if they work together for 6 days."