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Mathematics, 18.10.2019 22:30 ratpizza

An adult blinks about 450 times in 30 minutes. a 12 year old blinks about 160 times in 30 minutes. how many more times does an adult blink in 60 minutes than a 12 year old

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An adult blinks about 450 times in 30 minutes. a 12 year old blinks about 160 times in 30 minutes. h...
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