At the end of the year a car is worth 5% less than the value in January 2016 was $10,000.
Let the cost of car at the beginning of the year be X.
∴ the cost of car at the end of year(December 2016) after 5% discount is =
X-(X×5÷100) = $9500
=(20X-X)÷20=$9500
19X=9500×20
X=190000÷19
X=$10,000
The profit or loss percentage is always calculated on the cost price.
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