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Mathematics, 15.11.2019 05:31 billy583887

An adult blinks about 450 times in 30 minutes and a 12 year old blinks about 150 times in 15 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 and a 12 year old blinks about 150 times in 15 minutes...
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