Answer:
475 adults
Explanation:
Given: Admission price in a fair is $1.50 for children and $4 for adults.
Amount collected one day is $5050
2100 children paid the admission price.
As given 2100 children have paid the admission price.
∴ Amount of price paid by children =

∴ Amount of price paid by children =

Now, finding the amount collected from adults.
Amount collected from adults =

∴ Amount collected from adults=

Next, finding the number of adults that paid admission.
∴ Number of adult =

Number of adult =

∴ Total number of adults who paid the admission is 475.