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16 November, 08:07

Sam has $400 in his bank account and plans to save $25 per week. Zoe has $250 in her bank account and plans to save $75 per week. How many weeks will it be before their accounts are equal?

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  1. 16 November, 08:13
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    Say x is the number of weeks until their money is equal. Then, we can set up an equation.

    400 + 25x = 250 + 75x

    Subtract 250 from both sides

    150 + 25x = 75x

    Subtract 25x from both sides

    150 = 50x

    Divide by 50 on both sides

    3 = x

    That means the answer is 3 weeks.
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