Question

The count of bacteria in a culture grows by 10% in the first hour, decreases by 8% in
the second hour and again increases by 12% in the third hour. If the count of bacteria
in the sample is 13125000, what will be the count after 3 hours?​

Answer 1

Answer:

R1=rate of interest for the first hour =10%

R2=rate of interest for the second hour =8%

r3=rate of interest for the third hour = 12%

The count of bacteria in the sample is 13125000

The count of bacteria after 3 hours =1312500×(1+10÷100)(1-8÷100)

(1+12÷100)

1312500

=1487640