Answer:
Each bus have to make 30 trips to get the fans to the stadium.
Explanation:
We are given the following information:
Total number of fans = 100,000
Percentage of fans that would not be able to park at stadium = 42%
Number of fans that would not be able to park at stadium =

Number of buses = 20
Number of fans each bus can carry = 70
Number of fans carried by 20 buses in single trip = 1400
Number of trips to be taken =
Thus, each bus have to make 30 trips to get the fans to the stadium.