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3 years ago

10

Nick O’ Time, the plumber, charges $30 per hour. His brother Ivan, the plumber’s helper, charges $20 per hour. Nick starts worki

ng on a job. Four hours later Ivan joins him and both work until the job is finished. If they make a total of $470, how long did they work together?

1 answer:

lianna [129]3 years ago

8 0

Answer:

7 hours

They worked together for 7 hours ($350 + $120)

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