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5 January, 23:25

Simon needed 10 gallons of gas last week. This week, Simon ended up needing 10% less. How much gas is that?

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  1. 5 January, 23:50
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    9 gallons

    Step-by-step explanation:

    Calculate the percentage of gas that Simon did not use this week.

    10 * 0.10 = 1

    Now, calculate how much he used this week.

    10 - 1 = 9

    Simon used 9 gallons of gas this week.
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