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Fiona wants to buy a computer that costs $300. if she gets a discount of $80, and she saves $20 a week from her tutoring job, how long will it take her to save enough money. write an equation to find how long it will take her to save enough money.

Respuesta :

Cost of computer = money she earns pr week * number of weeks + discount
300 $ = 20 $ * weeks + 80$
(300 $ - 80$)/20$ = 11 weeks

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