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A value of T.V. depreciates every year at the rate of 10% of its value at the beginning of the year. The T.V. was purchased for `50,000, when new and the scrap value realised when sold was `36,450. Find the number of years that the T.V. was used |
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Answer» 3 yearsStep-by-step explanation:Let the Time be n.Amount (A) = ₹36,450Principal (P) = ₹50,000Rate of DEPRECIATION (R) = 10%In CASE of depreciation, A = P (1 - R/100)ⁿ=> 36,450 = 50,000 (1 - 10/100)ⁿ=> 36450/50000 = (90/100)ⁿ=> 729/1000 = (9/10)ⁿ=> (9/10)³ = (9/10)ⁿ=> n = 3 YEARS |
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