Question

plz tell fast very urgent

Answer 1

Answer:

Step-by-step explanation:

Initially the bacteria count was 20000 so for 1st hour,

The 10% increment of bacteria = 20000+(20000*{10/100})= 22000

Second hour the count decreased by 10%,

So the bacteria count now 22000-(22000*(10/100))= 19800

Again in 3rd hour the count increased by 10%,

So the count is now, 19800+(19800*(10/100))=21780

So the bacteria count at the end of 3rd hour is 21780