8. The count of virus in a certain material is decreasing at the rate of 4.5 % per day. find the count of virus at
the end of fourth day, if the count was initially 1, 85,000.
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1
Answer:
Step-by-step explanation:
We have, P
0
= Original count of bacteria =506000,
Rate of increase =R=2.5% per hour,
Time =2 hours
∴ Bacteria count after 2 hours = P
P=P
0
(1+
100
R
)
T
=506000×(1+
100
2.5
)
2
=506000×
100
102.5
×
100
102.5
=531616.25=531616 (approx)
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