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Mathematics 8 Online
OpenStudy (cenaida):

The cost of a piece of machinery is $45,000. What is the value after five years with a depreciation rate of 12%? A. $21,252.06 B. $23,747.94 C. $42,364.03 D. $44,730.65

ganeshie8 (ganeshie8):

its depreciating 12% each year

ganeshie8 (ganeshie8):

after 1 year, its value wud be :- 45,000 - 12% of 45,000

ganeshie8 (ganeshie8):

after 2 years, its value wud be :- (45,000 - 12% of 45,000 ) - 12% of (45,000 - 12% of 45,000 )

ganeshie8 (ganeshie8):

keep going 5 times..

ganeshie8 (ganeshie8):

if that confuses enough, scratch all above, and use the simple compound interest formula :- \(\large A = P(1 - r)^n\)

ganeshie8 (ganeshie8):

P = 45,000 r = 12% = 0.12 n = 5

ganeshie8 (ganeshie8):

plug and chug

OpenStudy (anonymous):

The answer is 23747.94 but I don't know how to explain it well enough.

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