the rate of growth of bacteria is proportional to the number present. If initially there are 1000 bacteria and the number doubles in 1 hour the number of bacteria in 2 and a half hours will be?
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initial = 1000
in one hour = 2 x 1000 =2000
in 2 hrs = 2 x 2000 = 4000
in 2 and half hours = 4000 + (1/2 x 4000)
in 2 and half hrs the number of bacteria will be 6000
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