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?
There were 457 children tickets sold.
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