Answer:
b. 75
Explanation:
Calculation for how many people must attend the festival
Using this formula
Numbers of people to attend the festival=Expenses/Charges
Let plug in the formula
Numbers of people to attend the festival=($115+$110)/$3
Numbers of people to attend the festival=$225/$3
Numbers of people to attend the festival= 75 people
Therefore the numbers of people that must attend the festival is 75