Questions on Algebra: Proportions answered by real tutors!

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Question 150127: A cell divides into two identical copies every 4 minutes. How many cells will exist after 3 hours?: A cell divides into two identical copies every 4 minutes. How many cells will exist after 3 hours?
Answer by jojo14344(823) About Me  (Show Source):
You can put this solution on YOUR website!
We follow this eqn,
=2copies/4cross(minutes)*60cross(minutes)/1cross(hour)*3cross(hours)
= 90 copies
Hope this help
Thanks