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18 July, 19:08

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.

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  1. 18 July, 21:39
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    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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