At the city museum, child admission is $6.00 and adult admission is $9.60. On Tuesday, 177 tickets were sold for a total sales of $1350.00. How many adult tickets were sold that day?

80 adult tickets were sold that day.

This is a two equation problem.

First, let:

a = adult tickets

c = child tickets

Now, solve for either variable (c or a). We're going to isolate "c" in the second equation and plug it into the first.

Plug it in:

Now, plug in 80 for "a" in either of the equations to find "c."

Rather than solving algebraically, as shown above, you can also graph the two equations, and wherever they intersect will be the solution.

a and c

step-by-step explanation: