the depreciated value of an article after two years 12800 the rate of depreciation per is 20% find the marked price of the article
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Answered by
1
Answer:
Let the required number of years = n years
∴ Value of machine after n years = Its value when new (1−
100
r
)
n
⇒Rs.128000=Rs.250000(1−
100
20
)
n
⇒
Rs.250000
Rs.128000
=(
100
80
)
n
=(
5
4
)
n
On simplifying, we get :
(
5
4
)
3
=(
5
4
)
n
⇒n=3years
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