The number of bacteria in petri dish A doubles every 10 minutes. The number of bacteria in oetri dish B doubles every 6 minites. If both petri dishes begin with the same number of bacteria, how mmau times greater will the number of bacteria in petri dish b be than the number of bacteria in petri dish A after one hour?
1 answer:
Givens Petri Dish A sees a double ever 10 minutes Petri Dish B sees a double ever 6 minutesConsequences A doubles 60 / 10 = 6 times. B doubles 60 / 6 = 10 times.Solution If you work best with numbers then suppose there are 100 bacteria in both dishes at the beginning A = 100 * 2^6 B = 100 * 2^10 A will have 100 * 64 = 6400 bacteria growing inside A B will have 100 * 1024 = 102400 bacteria growing inside B B/A = 102400 / 6400 = 16 There are 16 times as many in B than in A. <<<< Answer
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