9. Two marks example problems III

1. The value of a motor cycle \(2\) years ago was \(₹70000\). It depreciates at the rate of \(4\%\) p.a. Find its present value.

 

Present value \(=\) \(₹\)

 

 

2. The bacteria in a culture grows by \(5\%\) in the first hour, decreases by \(8\%\) in the second
hour and again increases by \(10\%\) in the third hour. Find the count of the bacteria at the end of
\(3\) hours, if its initial count was \(10000\).

 

Count of the bacteria \(=\)