Question

The value of an old bike decreases every year at the rate of 4% over that of the previous year. If its value at the end of three years is Rs.13824, then find its present value.

Answer 1

Let the cost be 100
then value of bike after 3 years = 100 - 4 - 4 - 4
= 88
when cost 100 value be 88 after 3 year
when cost 13824 then value =
100×13824 / 88= 15709

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