A person purchases a television set for Rs 16000. It's estimated life is 20 years. If yearly depreciation is assumed to be constant. Find the rate of depreciation and price after 8 years.

Question

amistre64 · Answer

the depreciation is constant sooo;  16000/20

amistre64 · Answer

since 8 years of depreciation have accumulated .... the price is 16000 - 8(dep)

anonymous · Answer

t8= 16000+(8-1)(-800) = 16000-5600 = 10400

anonymous · Answer

but answer given is 9600

amistre64 · Answer

why would you only do it for 7 years?

anonymous · Answer

isn't this an  arithmetic sequence with first term 16000 and common difference - 800 ?? 
so the formula of t8 would be t8 = a+(n-1)d ?

amistre64 · Answer

if you insist on starting at t1,  then t(1+8) = t9

amistre64 · Answer

if you start at t0,  then there is no need to subtract 1

amistre64 · Answer

t0 = 16000 - 800(0)
t1 = 16000 - 800(1)
t2 = 16000 - 800(2)
...
t8 = 16000 - 800(8)

anonymous · Answer

:) got u ... thanks !!

amistre64 · Answer

youre welcome