C.22 Consumption tax inclusive price

The tax-inclusive price which is added 5% of the consumption tax to the product cost is considered.

The product cost is considered as an integer and tax-inclusive price is made of omitting figures below a decimal point.

For example, when the product cost is 10 yen, the tax-inclusive price is also 10 yen and when the product cost is 100 yen, the tax-inclusive price is changes to 105 yen.

Find the product cost when the tax-inclusive price is 10000 yen.






Answer
9524 yen