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3. David needs to work out how many hours he worked in a week so he can lodge them
with Centrelink. He is paid $20 an hour and received $30 in tips for the week. If he
earnt $580, how many hours did he work? (Leave your answer as a fraction).

Answer :

Answer:  27.50 hours

Step-by-step explanation:

580 - 30 (tips)  =  $ 550  paid earnings

550 /  20  =     27.50 hours  ( paid earning divided by hourly rate of pay)

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