Assume that last year you purchased a real asset, say a piece of land, for $150,000. You paid $30,000 down and borrowed the balance. The rate of inflation between last year and this year was 4%. If asset was "well behaved" (i.e. the market price rose at the same rate as inflation) and you sold it this year (365 days later), the nominal rate of return on your $30,000 investment would be: 420% (ignore the time value of money).

What was the real rate of return on your $30,000 investment?