Mathematics, 06.10.2019 20:10 marshunsanders

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