A machine depreciates every year at the rate of 20% of its value at the beginning of the year. The machine was purchased for Rs.250000 when new and the scrap value realised when sold was Rs. 128000. Find the number of years that the machine was used.
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Answer:
3 years
Step-by-step explanation:
Value drop rate= 20% or 0.8 times
Purchase value= Rs. 250000
Sold for= Rs. 128000
Value drop rate= 128000/250000=0.512
0.512=0.8³ so 3 times value drop means the machine was used for 3 years
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