It cost 100,000*.01=$<<100000*.01=1000>>1,000 a day to keep the place open
He makes 150*10=$<<150*10=1500>>1500 a day from the park
So he makes a profit of 1500-1000=$<<1500-1000=500>>500 a day
So it takes 100000/500=<<100000/500=200>>200 days to make back his money
#### 200