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18 November, 21:13

An adult blinks about 450 times in 30 minutes. A 12 year old blinks about 150 times in 15 minutes. How many more times does an adult blink in 60 minutes that a 12-year-old?

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  1. 18 November, 21:38
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    300

    Step-by-step explanation:

    An adult blinks

    450 in 30 minutes

    900 in 60 minutes (multiply 2 on both sidds)

    A 12-year-old blinks

    150 times in 15 minutes

    600 times in 60 minutes (multiply 4 on both sides)

    Difference:

    900 - 600 = 300.

    An adult blinks 300 more times.
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