I set the list price with 15 % profit on the cost price of a certain article.
But it did not be sold.
Then I decided to sell at 2070 yen which is 10 % discount of the list price.
Find the cost price.
Answer
2000 yen
Solution
Assuming the cost price is 1, list price = 1 × (1 + 0.15) = 1.15.
1.15 × ( 1 - 0.1) = 1.035 = 2070 yen
1 = 2070 / 1.035 = 2000 yen.
