# Admission to a local aquarium is $10 for adults and $7 for children. The aquarium collected $6,459 from the sale of 783 tickets. How many children's tickets were sold?

##### 1 Answer

Dec 12, 2016

There were 457 children tickets sold.

#### Explanation:

First, let's define our variables:

We can call the number of tickets for adults

We can call the number of tickets for children

Now we can right two equations which we can then solve using substitution:

Step 1) Solve the first equation for

Step 2) Substitute

Step 3) Substitute