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cdgood12
30.09.2019 •
Mathematics
An adult blinks about 450 times in 30 minuets. a twelve year old blinks about 150 times in 15 minuets. how many more times does an adult blink in 60 minuets than a twelve year old?
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Ответ:
If an adult blinks 450 times in 30 minutes, then he will blink 900 times in 60 minutes.
A 12-year old blinks 150 times in 15 minutes, so he will blink (150 x 4) in 60 minutes, which comes out to: 600.
so 900-600
An adult blinks 300 times more in 60 minutes than a 12-year old.
Ответ:
The first one the p=30 ft and a=15 ft and the second one is p=26 km and a= 36 km