REALLY NEED HELP PLEASE AND THANK YOU and if you could how to get the work i would appreciate it thank you
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all you have to do is divide the years humans have been on the earth by the age and then multiply it by 100:
100,000 years
--------------------------- (100) = 0.002173913%
4600000000 years
100,000 years
--------------------------- (100) = 0.002173913%
4600000000 years