Mathematics, 29.07.2019 06:00, mandy9386

An electrician charges $80 an hour. his apprentice earns $42 an hour. the apprentice works on a job 3 hours less than the plumber. together they earn $850. how many hours did they each work?

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An electrician charges $80 an hour. his apprentice earns $42 an hour. the apprentice works on a job...