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10-09-2014
Mathematics

Answered

Mari and Jen each work 20 hours a week at different jobs.Mari earns twice as much as Jen.Together they earn $480.How much does each girl earn in a week

Answer :

10-09-2014

[tex]x-Jen\ earn\\2x-earn\ Mari\\\\x+2x=480\\3x=480\\x=160\\\\2x=320\\\\Jen\ earn\ 160\ and\ Mari\ 320.[/tex]

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