Answer:
$80
Explanation:
2 adults at $20 each
4 children at $10 each
20(2)+10(4)=80
40+40=80
80=80
why multiple 2 by 20?
because there are 2 adults and it costs $20 per adult
why multiple 4 by 10?
because there are 4 children and it costs $10 per child
why add them together?
because they want admission for 2 adults and 4 children so adding them together will give the total price