Percentages involving Finances: Profit and Loss

A house costs \(\$300,000\) in the year \(2010\), and the price increased by \(20\%\) over the next \(5\) years. Then the price further increased by \(25\%\) over the next \(5\) years. Find

1. the prices of the house in the year \(2015\) and the year \(2020\), respectively,
2. the overall percentage of increase in the house's price from year \(2010\) to \(2020\).