a) The value of a particular land in Malabe was purchased for Rs 10 million. Its
value appreciates according to the equation
L is the value of the land
L(O) is the purchase price
k is the growth constant
t is the time in years
L = L(O) · ekt
After extensive research it has been found that the growth factor k is 3% per year.
How long will it take for the land to double its purchase value? ( 4 marks)
b) At the same time the land was purchased, a house was built on the land for Rs
3.5 million. The value of the house depreciates according to
H H(O) · e-qt
His the value of the house
H(O) is the price of building the house
q is the depreciation constant
t is the time in years
After some research it has been found that the depreciation factor q is 2% per year.
How long will take for the house to lose 75% of its initial value? (4 marks)
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