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Mathematics, Class 10 · Unit 3
3.2 Depreciation
Values that fall every year · 8 worked examples
By the end of this lesson you can
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Explain depreciation and compound depreciation
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Find the value after T years and the amount lost
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Work back to the rate, the time and the original price
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Solve profit, loss and share problems
Why does value fall?
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Tractor: bought for Rs. 5,50,000, sold for Rs. 3,60,000 two years later
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A second-hand cupboard, Rs. 15,000 cheaper than new
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Photocopy machine: from Rs. 2,10,000 down to Rs. 1,00,000
Presenter notes: Today we learn how the value of things falls over time, and how to calculate it.