The history museum is hosting a special exhibition on history of flight. The admission ticket for each adult costs $3 and the admission ticket for each child costs $2. On the opening day of the exhibition, 60 tickets were sold for a total of $160. How many adults visited the special exhibition?

1 answer

Let's say the number of adult tickets sold is x and the number of child tickets sold is y.

From the information given:
x + y = 60 (total tickets sold)
3x + 2y = 160 (total revenue from ticket sales)

Solving the equations simultaneously:
From the first equation, we have y = 60 - x.

Substitute y = 60 - x into the second equation:
3x + 2(60 - x) = 160
3x + 120 - 2x = 160
x + 120 = 160
x = 40

So, 40 adult tickets were sold on the opening day of the special exhibition.