Mathematics, 05.10.2019 04:00, aziah86

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 than a 12 year old?

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