Answer: There were 1200 people at the amusement park.
Step-by-step explanation:
Let x represent the total number of people in the amusement park.
At the amusement park, 60% of the people were adults, and the rest were children. It means that the number of people at the park that were adults would be
60/100 × x = 0.6 × x = 0.6x
There were 720 adults. It means that
0.6x = 720
Dividing the left hand side and the right hand side of the equation by 0.6, it becomes
0.6x/0.6 = 720/0.6
x = 1200
