The country of Aquilonia has a tax system identical to that of Canada. Suppose an Aquilonian bought a parcel of land for $10,000 in 1960 when the price index equalled 100. In 2019, the person sold the...

The country of Aquilonia has a tax system identical to that of Canada. Suppose an Aquilonian bought a parcel of land for $10,000 in 1960 when the price index equalled 100. In 2019, the person sold the land for $100,000, and the price index equalled 500. If the person must pay 20 percent of any capital gain in taxes, what is the after-tax real capital gain (in 2019 dollars) on the land?