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Mathematics, 13.11.2020 23:00 neariah24

A business owner wants to have the front window of his store painted and is considering two artists for the job. Bobby has quoted a flat rate of $400 for the job. Sadie's quote is $10 per
hour, plus $100 to cover the cost of materials. Depending on how long it takes Sadie to paint
the window, these two could end up charging the same amount. How long would Sadie have
to take?

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