The history museum is hosting a special exhibition on the history of flight. The admission ticket for each adult costs $2.00. On the opening day of the exhibition, 60 tickets were sold for a total of $160.00. How many adults visited the special exhibition?

Let's represent the number of adult tickets sold as a variable, say x.

According to the information given, each adult ticket costs $2.00, so the total revenue from adult tickets can be represented as 2x.

We are also given that 60 tickets were sold and the total revenue was $160.00, so we can write the equation:
2x = 160

Solving for x:
x = 160 / 2
x = 80

Therefore, 80 adult tickets were sold on the opening day of the exhibition.