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4 September, 21:11

Marcus spent 10 hours doing his homework last week. This week he spent 11 hours doing homework. He says that he spent 110% more time doing homework this week. Is he correct?

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  1. 5 September, 01:00
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    [ 11 - 10 ] / 10 x 100%

    = 1 / 10 x 100%

    = 10%

    Only 10% longer
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