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11 March, 07:42

90% of students at a university use a backpack, while the rest do not. Of all the students, 50% carry their laptops with them and 5% carry neither a backpack nor laptop. What percentage of students carry their laptops and use a backpack?

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  1. 11 March, 08:46
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    90% of 100 = 90

    50% of 90 = 45

    5% of 45 = 2.25

    The answer is 2.25
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