<human>:  Jamestown has 20 theme parks. If Venice has 25 more theme parks than Jamestown, and Marina Del Ray has 50 more theme parks than Jamestown, calculate the number of theme parks present in the three towns.
<bot>: How many theme parks are in Venice? ** Since Venice has 25 more theme parks than Jamestown, there are 20+25 = <<20+25=45>>45 theme parks in Venice.
How many theme parks are in Venice and Jamestown? ** Together, Venice and Jamestown have 45+20 = <<45+20=65>>65 theme parks
How many theme parks are in Marina Del Ray? ** With 50 more theme parks than Jamestown, Marina Del Ray has 50+20 = <<50+20=70>>70 theme parks.
How many theme parks are in the three towns? ** The total number of theme parks in the three towns is 70+65 = <<70+65=135>>135
#### 135